Question

me ajudem passo a passo: \•_•/

a) 7(x-5)=3(x+1)
b) 3(x-2)=4(-x+3)
c) 2(x+1)- (x-1)=0
d)5(x+1)-3(x+2=0​

Answer 1

Resposta:

a) x= 9,5

b)×= 18/7

c× = -3

d)×=1/2

Explicação passo-a-passo:

a) 7(x-5) = 3(x+1)

7x-35 =3× + 3

7x - 3x = 35+3

4x = 38 = x= 38÷4

x = 9,5

b) 3(x-2)= 4(-x+3)

3x - 6 = -4x + 12

3x + 4x = 12 + 6

7x = 18 = x= 18÷ 7

x= 18/7

c) 2(x+ 1) - (x-1) = 0

2x + 2 - (x - 1)=0

2x + 2 - x + 1 = 0

X + 2 + 1 = 0

x = - 3

d) 5(x+1)-3(x+2) = 0

5x + 5 -3x -6 =0

2x +5 - 6 =0

2x = 6 - 5

2x = 1

x = 1/2