Question

b) 2x + 3 - x + 21 = x + 4x - 10 + 12??

Answer 1

2x+3-x+21=x+4x-10+12

x+24=5x+2

24-2=5x-x

4x=22

x=22/4

x=5,5

Answer 2

2x+3-x+21=x+4x-10+12
2x-x-x-4x=-10+12-3-21
-4x=-22 (-1)
4x=22
x=22/4
x=5,5
Resposta: 5,5