Решите уравнение2(3-x)+9=5-7x

Question

Решите уравнение
2(3-x)+9=5-7x

Comments

6-2х+9=5-7х

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15-2х=5-7х-2х+7=5-155х=-10х=-2

Answer 1

2(3-х)+9=5-7х;
6-2х+9=5-7х;
15-2х=5-7х;
-2х+7х=5-15;
5х=-10;
х=-2.

Answer 2

6-2x+9=5 -7x
-2x+7x=5-9-6
5x=-10
x=-10:5
x=-5

Comments

не-5, а -2