Respuesta:
a)
x+2=8
×=8-2
x=6
b)
-12+×=-20
x=-20+12
×=-8
c)
n-5=-17
n=-17+5
n=-12
d)
6-m=10
m=10-6
m=4
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Respuesta:
a)
x+2=8
×=8-2
x=6
b)
-12+×=-20
x=-20+12
×=-8
c)
n-5=-17
n=-17+5
n=-12
d)
6-m=10
m=10-6
m=4