Simplify the expression: 7m - 9 + 9 ____

Identify Like Terms: Identify like terms in the expression 7m - 9 + 9. Like terms are terms that have the same variable raised to the same power. In this case, -9 and +9 are like terms because they are both constants without variables.Combine Like Terms: Combine the like terms -9 + 9. -9 + 9 equals 0 because adding a number to its negative cancels out both numbers.Write Simplified Expression: Write down the simplified expression after combining like terms. Since -9 + 9 equals 0, the expression simplifies to 7m + 0.Recognize Value Unchanged: Recognize that adding 0 to any number or expression does not change its value. Therefore, 7m + 0 is simply 7m.

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Simplify the expression: $\newline$ $7m - 9 + 9$

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Math Problems

Grade 8

Add and subtract linear expressions

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Q. Simplify the expression:

\newline

7m - 9 + 9

Identify Like Terms: Identify like terms in the expression $7m - 9 + 9$ . Like terms are terms that have the same variable raised to the same power. In this case, $-9$ and $+9$ are like terms because they are both constants without variables.
Combine Like Terms: Combine the like terms $-9 + 9$ . $-9 + 9$ equals $0$ because adding a number to its negative cancels out both numbers.
Write Simplified Expression: Write down the simplified expression after combining like terms. $\newline$ Since $-9 + 9 = 0$ , the expression simplifies to $7m + 0$ .
Recognize Value Unchanged: Recognize that adding $0$ to any number or expression does not change its value. $\newline$ Therefore, $7m + 0$ is simply $7m$ .