Question

решить уравнения 23 - d = 7 ; х + 16 = 40

Answer 1

23-d=7
d=23-7
d=16

x+16=40
x=40-16
x=24

Answer 2

23-d=7
d=23-7
d=16
23-16=7

x+16=40
x=40-16
x=24
24+16=40