Question

Resolva as equações
A)x-5=13
B)3x+5=2
C)3x-7=2x+5
D)7x+8=4x-10
E)5 (2x-4)=7 (x+1)-3
F)3 (2x-3) +2 (x+1)=3x+18
Me ajudem por favor !!

Answer 1

Resposta:

a)x-5=13

x=13+5

x=18

B)3x+5=2

3x=2-5

3x= -3

x= -3/3

x= -1

C)3x-7=2x+5

3x-2x=5+7

x=12

D)7x+8=4x-10

7x-4x= -10-8

3x= -18

x= -18/3

x= -6

E)5 (2x-4)=7 (x+1)-3

10x-20=7x+7-3

10x-7x=7-3+20

3x=24

x=24/3

x=8

F)3 (2x-3) +2 (x+1)=3x+18

6x-9+2x+2=3x+18

6x+2x-3x=18+9-2

5x=25

x=25/5

x= 5