Question

Ache o valor do X na equação: 2x+5x=x+100

Answer 1

7x -x = 100
6x = 100
x = 100/6
x = 16,66...

Answer 2

$2x + 5x = x + 100 \\ 7x - x = 100 \\ 6x = 100 \\ x = \frac{100 \div 2}{6 \div 2} \\ \\ x = \frac{50}{3}$