Question

3 Resola as seguintes equações
a)3× = 15
b) 2× = 14
c)4×= -12
d)7× = 21
e)13×=13
f)9×= -9​

Answer 1

Resposta:

a) ×=15-3

×=12

b)×=14-2

×=12

c)×=-12-4

×=-16

d)×=21-7

×=14

e)×=13-13

×=0

f)×=-9-9

×=-18

Answer 2

a)x=5
b)x=7
c)x=-3
d)x=3
e)x=1
f)x=-1