Could someone please help me do the math? 20

The answer is 45. This is a deformed equation problem, you can set the shoe to x, the villain to y, and the bottle to z, then you can list the equation:

3x=302y+x=20

2z+y=17

After calculation, it can be found that x=10=y, z=.

Ternary Linear Equation Solving:The basic idea of solving the system of ternary equations is still elimination, and its basic method is to substitute the elimination method and the addition and subtraction elimination.

The steps are as follows: 1. Use the substitution method or addition and subtraction method to eliminate an unknown number and obtain a binary system of equations.

2. Solve this system of binary equations and find the values of two unknowns.

3. Substituting the values of these two unknowns into an equation containing three unknowns in the original equation, finding the value of the third unknown, and writing the values of these three unknowns together in curly braces is the solution of the system of ternary equations.

I'll answer that question. Follow the prompts on the pattern. The boot should be equal to ten. The villain should be equal to five. A pair of chopsticks in the middle should be equal to six. The answer to the last equation is 10+5 1 15.

The penultimate row of the poster of the man is two pens. Single shoe 5, one person 5, that person wears a pair of shoes 10, holds 3 pens, a pen 3

The three people are still holding two bottles, so the bottle is 2 and the end result is, 10 + 21 * 2 = 52

Xie Qiao regrets this coarseness: Min Pa Zheng 5x+3=18

5x+3-3=18-3

5x=155x÷5=15÷5x=3

May these long years of hard work not be for anyone to see, but to work hard, no matter the result can be a clear conscience; Work hard because you can not accept the frame of fate and rely on yourself to make a beautiful counterattack. When you are young, you should turn hard work into a habit, not an impulsive and three-minute heat.

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The Agricultural University of Randwageningen has developed a biodegradable bioplastic, which is mainly based on plant stems and stems, and is produced by adding potatoes, corn and wheat starch as auxiliary materials, which can be degraded in the soil and will not pollute the land. After the members of this group inquired a large amount of information, it was found that it has the following shortcomings: first, because it is easy to be degraded, and the presence of a variety of microorganisms and bacteria in the air will cause the deterioration of degraded materials, this problem is also confirmed by the members of this group in the operation process; Second, the frequency of replacement is too fast.

Although the express packaging box made of degradable materials can be degraded, it is still a disposable express box, and the production of degradable materials also requires "strong technology". Due to its recyclability, it was decided not to consider this degradable material for the sake of design rigor and suitability.

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Fortune telling? Count? Calculate it.