Resposta :
Resposta:
a) 38-2=36
36÷4=9
X=9
b) X=4
9×4=36
6×4+12
24+12=36
c) X=6
5×6-1=29
3×6+1
18+11=29
d)2x+8=x+13
2x-x=13-8
×=5
Resposta:
a) 38-2=36
36÷4=9
X=9
b) X=4
9×4=36
6×4+12
24+12=36
c) X=6
5×6-1=29
3×6+1
18+11=29
d)2x+8=x+13
2x-x=13-8
×=5