Question

1.(x+7)-(3x+5)=2 2.3*(2x-1)+12=x 3.x/3+x/4=7 Заранее спасибо!

Answer 1

(х+7)-(3х+5)=2
х+7-3х-5=2
-2х=2-7+5
-2х=0
х=0

3*(2х-1)+12=х
6х-3+12=х
5х=-9
х=-9/5

х/3+х/4=7
7х/12=7
7х=84
х=12

Answer 2

Solution:

To solve the given equations, let's break it down step by step:

1. Simplify the equation (x+7)-(3x+5)=2+2.3*(2x-1)+12=x+3.x/3+x/4=7:

- Simplify the left side of the equation: - Distribute the negative sign in front of the parentheses: x + 7 - 3x - 5 = 2 + 2.3 * (2x - 1) + 12 = x + 3 * x / 3 + x / 4 = 7 - Combine like terms: -2x + 2 = 2 + 6x - 3 + 12 = x + x + x / 3 + x / 4 = 7 - Simplify the right side of the equation: -2x + 2 = 6x + 11 = 7

2. Solve the equation -2x + 2 = 6x + 11 = 7:

- Combine like terms: -2x + 2 = 6x + 11 = 7 - Move all the variables to one side and the constants to the other side: - -2x - 6x = 11 - 2 = 7 - 2 - Simplify: -8x = 9 = 5 - Divide both sides by -8 to solve for x: - x = 9 / -8 = 5 / -8

3. Solve the equation x = 5 / -8:

- Divide 5 by -8: x = -5/8

Therefore, the solution to the given equations is x = -5/8.

Please let me know if you need any further assistance!