MAST Grade 6 Equivalent Expressions. Practice it free.

The constants $10$ and $-4$ are like terms: $10 - 4 = 6$. The term $t^{2}$ stays the same, so the expression is equivalent to $t^{2} + 6\textsf{.}$

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

The constants $15$ and $-7$ are like terms: $15 - 7 = 8$. The term $r^{2}$ stays the same, so the expression is equivalent to $r^{2} + 8\textsf{.}$

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

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 $x$-terms: $1x + 2x = 3x$. Combine constants: $6 - 8 = -2$. Result: $3x - 2$.

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

Combine: $2x + -4x = -2x$, $-7 + 3 = -4$. Result: $-2x - 4$.