Question

(a-5×6+10×5):5+4×8=42 metoda mersului invers

Answer 1

42:8=5,25
5,25-5=0,25
5×6=30
10×5=50
(a-30+50):5=0,25
b:5=0,25
a-30+50=20
c+50=20
a-30=30
a=60