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Anonymous users2024-02-071. (1) Solution: So x=30
2) Solution: 2x+ so x=
3) Solution: So x=12
4) Solution: x+ so x=33
2. (1) Solution: Set up x million tons of steel output in January.
So x(1+20%)=
So x=10,000 tons).
A: 10,000 tons of steel were produced in January.
2) Solution: The original price of this toy airplane was X yuan.
So x(1-20%)=40
So x=50 (yuan).
A: The original price of this toy airplane was 50 yuan.
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Anonymous users2024-02-061), so x=30
2x+，x=
x=12÷x+,x=33÷
2) If x million tons of steel are produced in January, then (1+20%)x=x=
Let the original price be x yuan, then (1-20%)x=40
x=50
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Anonymous users2024-02-05Let the production in January be x, then.
Let the original price be x, then x-40=
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Anonymous users2024-02-0475%x=30
x=30/2x+30%x=
x=475%x-35%x=12
40%x=12
x=30x+120%x=33
220%x=33
x = 152, set the output of x million tons in January.
x(1+20%)=
x = 10,000 tons. The original price is $x.
x(1-20%)=40
80%x=40
x=40 RMB.
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Anonymous users2024-02-032。Let's say that x million tons of steel will be produced in January, then.
x（1+20%）=
The equation is solved x=
That is, 10,000 tons of steel were produced in January.
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Anonymous users2024-02-02Let the numerator before the original approximation be 2x, then the denominator is 3x
2x－6）/（3x－6）＝3/5
3×（3x－6）＝5（2x－6）
9x－18＝10x－30
10x－9x＝30－18
x 12 The original score was (2 12) (3 12) 24 26
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Anonymous users2024-02-01Equation: (3x+6) (5x+6)=2 3
Use the ratio: (3x+6)*3=(5x+6)*29x+18=10x+12
18-12=10x-9x
10x-9x=18-12
x=6Original score: (3x+6 5x+6)=24 36Is it right to check once (for simplicity, the one-dimensional equation is OK, I don't write it too rare)?
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Anonymous users2024-01-31Let the original fraction be 2n 3n
(2n-6) (3n-6) = 3 5
n = 12, the original score was 24 36
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Anonymous users2024-01-30Let the numerator be 2k and the denominator be 3k, then (2k-6) (3k-6)=3 5
The solution is k=12, so the original fraction is 24 36
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Anonymous users2024-01-29Let the original score be x y
x y=2 3 x-6 y 6=3 53x=2y 5x-3y=12
Substituting y=36 x=24
So the original score was 24 36
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Anonymous users2024-01-28x/y=2/3
x-6)/(y-6)=3/5
Solve the equation to get x=24 and y=36
So the original score was 24 36
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Anonymous users2024-01-27Let the original fraction be 3a 2a and the new fraction after subtracting 6 to 5b 3b to give a relation:
2a-6) (3a-6) = 3b 5b, get the answer, a = 12, b = 18, so the original score is 24 36.
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Anonymous users2024-01-26x/y=2/3
x-6/y-6
The solution is x=24, so the original score is 24 36
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Anonymous users2024-01-25The final Peiyou question is left blank and not written.
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