3 10(3)-6 = 24 3(5+3) = 24

[latex]10x - 6 = 3(5 + x) \\10 - x = 3(5) + 3(x) \\10x - 6 = 15 + 3x \\7x - 6 = 15 \\\frac{7x}{7} = \frac{21}{7} \\x = 3[/latex]