Question

resolva as equações: a) 2x - 5 = x + 1 b)3( x-1 ) - 7 = 15​

Answer 1

Ra) 3+x=0

x = - 3

b)23x+2=2

23x = 2 - 2

23x = 0

x = 0/23

x = 0

4x = 25 - 12 + 7

4x =  20

x = 20/4

x = 5

c)12-7+4x=25

4x = 25 - 12 + 7

4x =  20

x = 20/4

x = 5

d)5x-3x=30

2x = 30

x = 30/2

x = 15

e)4x+10=45-3x

4x + 3x = 45 - 10

7x = 35

x = 35/7

x = 5

Explicação passo a passo: