Răspuns :
Răspuns:
(x x 2-40) : (32:8) = 5
(x x2-40):4=5
(x x2-40)=5x4
x X2-40=20
x X2=20+40
x x 2=60
x=60:2
x=30
(48 - x): 2-9:3+5 = 10
(48-x):2-3+5=10
(48-x):2-3=10-5
(48-x):2-3=5
(48-x):2=5+3
(48-x):2=8
(48-x)=8x2
48-x=16
x=48-16
x=32
36 + 6 x 9 - (x:3 + 15)= 42
36+54-(x:3+15)=42
90-(x:3+15)=42
(x:3+15)=90-42
x:3+15=48
x:3=48-15
x:3=33
x=33x3
x=99