Question

помогите решить уравнения b+4=5×2 , 6×6-y=6 , 9×9+x=100 , (80-d)×5=60

Answer 1

b+4=10
b=10-4
b=6

6x6-y=6
36-y=6
y=36-6
y=30

Answer 2

(80-d)×5=60

Answer 3

(80-d)=60:5

Answer 4

(80-d)=12

Answer 5

d=80-12

Answer 6

d=68