Given:
The expression is 2(-9x+21) - (14-10x).
Explanation:
Simplify the expression by using distibutive property of multiplication.
[tex]\begin{gathered} 2(-9x+21)-(14-10x)=2\cdot(-9x)+2\cdot21-1\cdot14-1\cdot(-10x) \\ =-18x+42-14+10x \\ =-8x+28 \end{gathered}[/tex]
So equivalnet expression is,
-8x + 28
