Respostas
respondido por:
0
a)3x-x=-10
2x=-10
x=2/-10
x=-5
respondido por:
2
a)3×-×=-10
2×=-10
×=-10/2
×=-5
b)2×=46-12
2×=34
×=34/2
×=17
c)7×-2×=100-20
3×=80
×=80/3
×=26,6
d)6×-2×=180+90
4×=270
×=270/4
×= 67,5
e)5×=45-15
5×=30
×=30/5
×=6
f)9×-2×=56-28
7×=28
×=28/7
×=4
2×=-10
×=-10/2
×=-5
b)2×=46-12
2×=34
×=34/2
×=17
c)7×-2×=100-20
3×=80
×=80/3
×=26,6
d)6×-2×=180+90
4×=270
×=270/4
×= 67,5
e)5×=45-15
5×=30
×=30/5
×=6
f)9×-2×=56-28
7×=28
×=28/7
×=4
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