Question

Calculeazã a:b stind ca :a =(24•2+5•9)-30
b=8•4•3 -40•2-9

Answer 1

a= ( 48 + 45)- 30
a =  93 - 30
a= 63
b = 96 - 71
b = 25 
a :b =  63 : 25

Answer 2

A=(48+45)-30
A=93-30
A=63
B=32x3-80-9
B=96-80-9
B=16-9
B=7
A:B
63:7=9