Question

38)-6(3х-2)=(-х+4)*3 39)6(b+1)=5(-b-1) 40)7-(5-x)=2-3 41)-4c+(c+1)*2=14-2c *это умножить

Answer 1

-18х+12=-3х+12
15х=0
х=0

6b+6=-5b-5
11b=-11
b=-1

7-5+x=2-3
x=-3

-4c+2c+2=14-2c
0c=12
Нет решения

Answer 2

$38) - 6 \times (3x - 2) = ( - x + 4) \times 3 \\ - 18x + 12 = - 3x + 12 \\ - 18x + 3x = - 12 + 12 \\ - 18x + 3x = 0 \\ - 15x = 0 \\ x = 0$
$39)6 \times (b + 1) = 5 \times ( - b - 1) \\ 6b + 6 = - 5b - 5 \\ 6b + 5b = - 6 - 5 \\ 11 b = - 11 \\ b = - 1$
$40)7 - (5x - x) = 2 - 3 \\ 7 - 4x = - 1 \\ - 4x = - 7 - 1 \\ - 4x = - 8 \\ x = 2$
$41) - 4c + (c + 1) \times 2 = 14 - 2c \\ - 4c + 2c + 2 = 14 - 2c \\ - 2c + 2 = 14 - 2c \\ - 2c + 2c = 14 - 2 \\0 c = 12 \\ c = 0$
нет ответа