Question

3.(5-×)-3.(1-2x)=42​

Answer 1

Explicación paso a paso:

$3(5 - x) - 3(1 - 2x) = 42 \\ 15 - 3x - 3 + 6x = 42 \\ 12 + 3x = 42 \\ 3x = 30 \\ x = 10$