Question

qual a resposta da equacao 19+2x-13=10-20 pra dar:9, 8, 3, 1, 7?

Answer 1

19+2x-13=10-20
2x=10-20+13-19
2x= -16
x=16/2 = -8/1
Espero ter ajudado

Answer 2

19+2x-13=10-20
2x=-19+13+10-20
2x=-19+23-20
2x=-19+03
2x=-16 (-1)
2x=16
x=16/2
x=8