Question

7Х+139 ----------- =15 13

Answer 1

Нужно обе части уравнения * на 13 (чтобы избавиться от дроби) - получаем: 7х+139=195. 7х=195-139. 7х=56. х=8. Ответ: х=8

Answer 2

To solve the equation 7x + 139 = 15, we need to isolate the variable x on one side of the equation.

First, let's subtract 139 from both sides of the equation:

7x + 139 - 139 = 15 - 139

This simplifies to:

7x = -124

To isolate x, we need to divide both sides of the equation by 7:

(7x)/7 = (-124)/7

x = -124/7

Performing the division, we get:

x ≈ -17.714

Therefore, the solution to the equation 7x + 139 = 15 is x ≈ -17.714.