Question

Rezolvati ecuatia x-1+4x egal 12+3x-7

Answer 1

$\displaystyle x-1+4x=12+3x-7 \\ x+4x-3x=12-7+1 \\ 2x=6 \\ x= \frac{6}{2} \\ x=3$

Answer 2

$x-1+4x=12+3x-7 \\ \to x+4x-3x=12-7+1 \\ \to 5x-3x=5+1 \\ \to 2x=6 \\ x=6:2 \\ x=3$