Question

1). 7х-4=(2х-7)=3(6х+5)2). 2-5(4х-7)=3(6х+5)​

Answer 1

$1)7x-4=(2x-7)=3(6x+5)\\7x-4-2x+7=18x+15\\5x+3=18x+15\\5x-18x=15-3\\-13x=12\\x=-\frac{12}{13}\\2)2-5(4x-7)=3(6x+5)\\2-20x+35=18x+15\\37-20x=18x+15\\-20x-18x=15-37\\-38x=-22\\x=\frac{11}{19}$

Answer 2

Ответ:

1)x=2

2)x=3

....................

Answer 3

To solve these equations, you can follow these steps:

1. Solve the equations step by step:

   a. 7x - 4 = (2x - 7) + 3(6x + 5)

   First, simplify the equation by expanding the terms on the right side:

   7x - 4 = 2x - 7 + 18x + 15

   Now, combine like terms on the right side:

   7x - 4 = 20x + 8

   Next, move the variable terms (with x) to one side and the constant terms to the other side:

   7x - 20x = 8 + 4

   -13x = 12

   Now, divide both sides by -13 to isolate x:

   x = -12/13

   b. 2 - 5(4x - 7) = 3(6x + 5)

   First, distribute the -5 on the left side and distribute the 3 on the right side:

   2 - 20x + 35 = 18x + 15

   Next, combine like terms on both sides:

   -20x + 37 = 18x + 15

   Move the variable terms (with x) to one side and the constant terms to the other side:

   -20x - 18x = 15 - 37

   -38x = -22

   Now, divide both sides by -38 to isolate x:

   x = -22 / -38

   x = 11 / 19

So, the solutions to the equations are:

1. x = -12/13
2. x = 11/19