Question

a) (8×5+6×9+a):9+312=323
b) 4×[(4×a-72):4+20]-64=20

Answer 1

a)(...):9=11

40+54+a=99/-94

a=5

b)4{(..)..}=84/÷4

(...)÷4+20=21

4a-72=4/+72

4a=76/÷4

a=19

Sper că te-am ajutat!