Resolva as seguintes equações, sendo u=q a)x_3=7b)x_4=-c)2×_5=...

resposta:

a)×=7+3

×=10

c)2×-5=4

2×=4+5

2×=9

×=9/2

×=4,5

d)2×-3=-10

2×=-10+3

2×=-7

×=-7/2

×=-3,5

e)3×-4=30

3×=30+4

3×=34

×=34/3

×=11,3

f)2×-5=-18

2×=-18+5

2×=-13

×=-13/2

×=--6,5

g)-×=9(-1)

×=-9

h)-×=-)

×=2

i)-7×=-14(-1)

7×=14

×=14/7

×=2

j)-5×=-12(-1)

5×=12

×=12/5

×= 2,4