Question

-2(2-5x)=2(x-3)-5 4x-2(x+7)=2(3-x) 1,24x+3,46=1,76x+6,58 -4,92y-(0,08y+5,12)=-0,88-y

Answer 1

Ответ:

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Answer 2

Let's solve each equation step by step:

1. -2(2-5x) = 2(x-3) - 5

First, simplify both sides of the equation: -4 + 10x = 2x - 6 - 5

Combine like terms: 10x + 4 = 2x - 11

Move the variables to one side and the constants to the other side: 10x - 2x = -11 - 4 8x = -15

Divide both sides by 8: x = -15/8

So the solution to the equation is x = -15/8.

2. 4x - 2(x+7) = 2(3-x)

First, distribute the -2 and 2 on their respective parentheses: 4x - 2x - 14 = 6 - 2x

Combine like terms: 2x - 14 = 6 - 2x

Move the variables to one side and the constants to the other side: 2x + 2x = 6 + 14 4x = 20

Divide both sides by 4: x = 20/4 x = 5

So the solution to the equation is x = 5.

3. 1.24x + 3.46 = 1.76x + 6.58

Move the variables to one side and the constants to the other side: 1.24x - 1.76x = 6.58 - 3.46 -0.52x = 3.12

Divide both sides by -0.52: x = 3.12 / -0.52 x = -6

So the solution to the equation is x = -6.

4. -4.92y - (0.08y + 5.12) = -0.88 - y

First, simplify both sides of the equation: -4.92y - 0.08y - 5.12 = -0.88 - y

Combine like terms: -5y - 5.12 = -0.88 - y

Move the variables to one side and the constants to the other side: -5y + y = -0.88 + 5.12 -4y = 4.24

Divide both sides by -4: y = 4.24 / -4 y = -1.06

So the solution to the equation is y = -1.06.