Question

Equação de 1 grau,Pfv gente!!!

A)4x-18+3x=10
B)2x+5+x+7=18
C)5x-91=4x-77
D)7x+1=5x-7
E)4x+5=+20
F)2(x+5)-4=26
G)3(x+3)-5-22
H)2(2x+7)+3 (3x-5)=3(4x-5)-1
I)3(x+2)=2(x-7)
J)4(2x-1)=3(x+2)
K)4(2m-1)+3m=2(4m-1)-(2-m)
L)3(x+2)-1=2

Answer 1

Resposta:

Letra D

7x+1= 5x-7

7x-5x= -7-1

2x= -8

x= -8/2

x= -4

Answer 2

Explicação passo-a-passo:

a)4x-18+3x=10

4x+3x=10+18

7x=28

x=28/7

x=4

b)2x+5+x+7=18

3x=18-12

3x=6

x=6/3

x=2

c)5x-91=4x-77

-4x+5x-91=-77

x=91-77

x=14

d)7x+1=5x-7

7x-5x+1=-7

2x=-8

x=-8/2

x=-4

e)4x+5=20

4x=20-5

4x=15

x=15/4

x=3,75

f)2(x+5)-4=26

2x+10-4=26

2x+10=26+4

2x+10=30

2x=30-10

2x=20

x=20/2

x=10

g)3(x+3)-5-22=0

3x+9-5-22=0

3x+4-22=0

3x-18=0

x=18/3

x=6

e por aí vai,espero ter ajudado!