Question

Primeiro grau

A)7x+1=5x-7
B)4x-18+3x=10

Answer 1

a) 7x-5x= -7-1

2x= -8

x= -8/2

x= -4

b)4x+3x= 10+18

7x= 28

x=28/7

x= 4

Answer 2

Vamos lá

A )
7X + 1 = 5X - 7

7X - 5X = - 1 - 1

2X = - 2

X = -2 / 2

X = - 1

B)
4X - 18 + 3x = 10

7X - 18 = 10

7X = 10 + 18

7X = 28

X = 28 / 7

X = 4