Question

Qual a resposta da equação 19+2x-13=10-20?

Answer 1

19+2x-13=10-20
2x = 10 - 20 -19 +13
2x= -10 -19 +13
2x= -29 +13
2x= - 16 
x= $\frac{-16}{2}$
x= -8

Answer 2

19+2x-13=10-20
2x=10-20-19+13
2x=4
x=4/2
x=2