Решите уравнения 40+×=78. 85-y=30

Question

Решите уравнения 40+×=78. 85-y=30

Answer 1

40+x=78
x=78-40
x=38
85-y=30
-y=30-85
-y=-55
y=-55/-1
y=55

Answer 2

X=78-40=38
x=38

y=85-30=55
y=55