Question

1) Resolva as equações. Use uma folha a aparte.
a) 3x-13 = 8
e) X-2 = 4x + 18
f) 7y-10 = y + 50
b) 4x-9 = 2
g) 2x + 5 + x + 7 = 18
c) 2x-2=12-5x
h) 5x –91 = 4x -77
d) 33+ x=5-3x​

Answer 1

Resposta:

a) 3x-13=8

3×=8+13

3×=21

×=21-3

×=18

b)4x-9=2

4×=2+9

4×=11

×=11-4

×=7

c) 2x-2=12-5×

2x+5×=12+2

7×=14

×=14-7

×=7

d)33+×=5-3×

x+3×=5-33

4×=-28

×=-28-4

×=-24

e)×-2=4×+18

×-4×=18+2

-3×=20

×=20+3

×=23

f)7y-10=y+50

7y-y=50+10

6y=60

y=60-6

y=54

g)2×+5+×+7=18

2x+×=18-7-5

3×=6

×=6-3

×=3

h)5×-91=4×-77

5×-4×=-77+91

1×=-168

×=168