Question

Вычислите сумму 3x+3−x, если 9x+9−x=47

Answer 1

9x + 9 - x = 47

8x = 47 - 9

8x = 38

x = $\frac{19}{4}$

3x+3−x = 2x + 3 = 2 * $\frac{19}{4}$ + 3 = 9,5 + 3 = 12,5