KSA Grade 6 Expressions and Equations. Practice it free.

The constants $8$ and $2$ are like terms: $8 + 2 = 10$. The term $3z$ stays the same, so the expression is equivalent to $3z + 10\textsf{.}$

Combine: $-6x + -2x = -8x$, $-8 + -7 = -15$. Result: $-8x - 15$.

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

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: $2x - 8$.

The constants $12$ and $5$ are like terms: $12 + 5 = 17$. The term $p$ stays the same, so the expression is equivalent to $p + 17\textsf{.}$

Distribute 5: $5 \cdot 9x + 5 \cdot -5 = 45x - 25$.