NH SAS Grade 6 Expressions and Equations. Practice it free.

The constants $7$ and $2$ are like terms: $7 + 2 = 9$. The term $m^{2}$ stays the same, so the expression is equivalent to $m^{2} + 9\textsf{.}$

Distribute 2: $2 \cdot 4x + 2 \cdot -3 = 8x - 6$.

$3^{2} = 3 \cdot 3 = 9\textsf{.}$

The base $7$ appears $5$ times as a factor, so $7 \times 7 \times 7 \times 7 \times 7 = 7^{5}$.

Multiply first: $3 \cdot 4 = 12$. Then $9 + 12 - 4 = 17$.

$\,3^2 = 3 \cdot 3 = 9$.

The constants $3$ and $8$ are like terms: $3 + 8 = 11$. The term $w$ stays the same, so the expression is equivalent to $w + 11\textsf{.}$

Combine: $-3x + 5x = 2x$, $-10 + 2 = -8$. Result: $2x - 8$.