Question

resolva a expressão
x+5= 15
2x-15=0

Answer 1

x + 5 = 15
x = 15 - 5
x = 10

2x - 15 = 0
2x = 0 + 15
x = 15/2

Answer 2

$x = 15 - 5 \\ x = 10 \\ \\ 2x = 15 + 0 \\ 2x = 15 \\ x = \frac{15}{2} \\ x = 12.5$