Question

Решите уравнение 5х + 10х = 20 + 15.

Answer 1

5х + 10х = 20 + 15;

15x = 35;

$x=\frac{35}{15}= \frac{7}{3} =2\frac{1}{3} .$

Answer 2

$5x + 10x = 20 + 15 \\ 15x = 35 \\ x = 35 \div 15 \\ x = \frac{7}{3} \\ x = 2 \frac{1}{3}$