Question

11- Resolva:
a) 3( x +10) = 2(x - 5)
b) 15x - 2(x-3) =45​

Answer 1

Resposta:

a)-40

b)

Explicação passo-a-passo:

a)

3x+30=2x-10

3x-2x=-10-30

x=-40

b)

15x-2x+6=45

13x=45-6

13x= 39

x=39/13

x=3