Question

решите уравнения 1.) 0.5х=4.5 2) 4-3х=3 3) 3х-7=х-11​

Answer 1

1)

$0.5x = 4.5 \\ x = \frac{4.5}{0.5} \\ x = 9$

2)

$4 - 3x = 3 \\ - 3x = 3 - 4 \\ - 3x = - 1 \\ 3 x = 1 \\ x = \frac{1}{3}$

3)

$3x - 7 = x - 11 \\ 3x - x = - 11 + 7 \\ 2x = - 4 \\ x = \frac{ - 4}{2} \\ x = - 2$

Answer 2

Ответ:

3х-х=-11+7

2х=-4

Х=-4:2

Х=-2