Question

Уравнения решить х-8=-8 5*d=37 x/(-4)=1/5 17-y=y-21

Answer 1

Х-8=-8
х = -8 + 8
х = 0

5*d=37
d= 37 : 5
d = 7.4

$\frac{x}{-4} = \frac{1}{5} \\ x= \frac{1}{5}*(-4) \\x=- \frac{4}{5}=- 0.8$

17-y=y-21
-y - y = -21 - 17
-2у = -38 
2у = 38
у = 38 : 2
у = 19

Answer 2

$1)x-8=-8\\x=-8+8\\x=0\\\\2)5d=37\\d=37:5\\d=7\\ \\ 3) \frac{x}{-4} = \frac{1}{5} \\ 5x=-4 \\ x=-0.8$

$4)17-y=y-21 \\ -y-y=-21-17 \\ -2y=-38 \\ y= \frac{-38}{-2} \\ y=19$