Answer:
x = 1/2
Step-by-step explanation:
[tex] - 3x + 1 + 10x = x + 4 \\ - 3x + 10x - x = 4 - 1 \\ ( - 3 + 10 - 1)x = 3 \\ 6x = 3 \\ x = \frac{3}{6} = \frac{1}{2} \\ x = \frac{1}{2} [/tex]