Question

Resolva as seguintes equações no caderno
A)7x=49
B)x+10=18
C)5x-14=31
D)3x+2=-1
E)6x+12=5x+4x
F)4x+28=-24
G)9x-13=95
H)3(m+4)+8=2+m
I)6x+14-3x-2x+158-x
J)20x+14-5x=7x+31+2x

Answer 1

a) x=7
b) x=8
c) x=9
d) x=-1
e) x=4
f) x=-13
g) x=12
h) 3m+12+8=2+m
2m=-18
m=-9
i) 172
j) x≈2,83