Question

1°) resolva as equações
A)×+=29
B)3×=39
C)2×=30
D)4×=44
E)3×=81
F)7×=49
G)×+8=40
H)×-8=45
I)3×=2++7
J)5×=55

Answer 1

A)×+=29
    x=29

B)3x=39
    x=39/3
    x=13

C)2x=30
    x=30/2
    x=15

D)4×=44
     x=44/4
     x=11

E)3×=81
    x=81/3 
    x=27

F)7×=49
    x=49/7
    x=7

G)×+8=40
    x=40-8
    x=32

H)×-8=45
    x=45+8
    x=53 

I)3×=2+7
   3x=9
    x=9/3
    x=3

J)5×=55
    x=55/5
    x=11