Question

a) 2×+6=×+18
b)5×-3=2×+9
C)3(2×-3)+2(×+1)
D)2×+3(×-5)=4×+9
E)2(×+1)-3(2×-5)=6×-3
F)3×-5=×-2

Answer 1

Resposta:

a)12; b) 4; c)6/9; d)-12 ;e)3/-2 f)3/2

Explicação passo-a-passo:

a)2×-×=18-6

x=12

b)5x-2×=9+3

3×=12

×=12/3

×=4

c)3(2×-3)+2(×+1)

6×-9 +2×+2=0

6×+2×=9-2

9×=6

×=6/9

d)2×+3(×-5)=4×+9

2×+3×-15=4×+9

2×-4×=9+15

-2×=24

×=24/-2

×=-12

e)2(×+1)-3(2×-5)=6×-3

2×+2-6×+15=6×-3

-4×-6×=-3+17

-10×=15

×=15/-10( simplifica)

×=3/-2

f)3×-5=×-2

3×-×=-2+5

2×=3

×=3/2