Solve equation 1 1 5 x 4 5 2x

x-3(20-x)=3

Solution: 4x-60+3x=3

4x+3x=3+60

7x=90x=90/7

2、 4-2x+3=-x-5

Solution: -2x+x=-5-4-3

x=-2x=2

3. Solution: 3 (x-1) = 2 * 6-2 (x -2) 3 x -3 = 12-2 x + 2

3x+2x=12+2+3

5x=17x=

4. Solution: (1 7) x + 2 = (1 4) x + 51 7) x - (1 4) x = 5-2

3/28)x=3

x=-285, solution: (1 2)x-(1 2)=2-(1 5)x-(1 5).

1/2)x+(1/5)x=2-(1/5)+(1/2)7/10)x=23/10

x=23/7

6. Solution: 2(5x+1)-(2x-1)=6

10x+2-2x+1=6

10x-2x=6-2-1

8x=3x=3/8

7. Solution: 15x-3(x-2)=5(2x-5)-4515x-3x+6=10x-25

15x-3x-10x=-25-6

2x=-31

x=8, solution: 2(2x+1)-(x-3)=2*64x+2-x+3=12

3x=12-2-3

3x=7x=7/3

Hope! If you don't understand, you can ask.

Depending on the nature of the equation, both sides of the equation are multiplied by 5 (5-x). Then move the term and you can solve the equation.

This is a fractional equation, and the test cannot be forgotten at the end, that is, after verifying that x is substituted into the denominator, the denominator is not 0, otherwise the equation is meaningless. Hope!

x/(2x-5)+5/(5-2x)=1

x/(2x-5)-5/(2x-5)=1

x-5)/(2x-5)=1

x-5=2x-5

x=0x=0

Root check: When Bla x = 0 substitute x front key (2x-5) + 5 type repentance slip (5-2x) = 0 -5 + 5 5 = 1

Obtain x=0 is the root of the original equation x (2x-5)-5 (2x-5)=1.

x/(2x-5)-5/(5-2x)=1

x/(2x-5)+5/(2x-5)=1

x+5)/(2x-5)=1

Multiply 2x-5 on the left and right.

x+5=2x-5

5+5=2x-x

x=10 has been tested by the state experience, and x=10 is not an additional root.

The solution of the equation is starvation x=10

If you approve of me, please click on the rotten "for satisfactory answers" in the bottom left, and wish you progress in your studies!

x = -5 of this punch 2x+1

x+2/5x=1

3/5x=1

x=1 (-3 liquid steak with 5).

x=-5 Silly 3

x-2/4=1/5+1+x-2

Obviously wrong, so it's not an equation. No solution. Did you miss something when you copied the question?

The two return sides are multiplied by 10 limbs: leakage and hunger.

10x-5x+2=2

5x=0x=0

First of all, the denominator is not zero, x ≠ 1 , 2 , 4 , 5 pass minute: (x-4)(x-5) = x-1) (x-2) x 2-9x+20=x 2-3x+2

6x=18x=3

Remove the denominator to get x-5=2x-5

Shift the term to get x-2x=-5+5

Combine similar terms to get -x=0

The coefficient is reduced to one, and x=0 is obtained

Test: Because when x=0, 2x-5≠0 5-2x≠ rock0 so x=0 is the original fierce excavation and knows the solution.