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To solve this problem, we will simplify the expression by separately combining the constants and the variable terms.
Step 1: Simplify the constant terms.
Step 2: Simplify the variable terms.
Step 3: Combine the results from steps 1 and 2.
Thus, the simplified expression is .
Therefore, the solution to the problem is , which corresponds to choice
4+X
Are the expressions the same or not?
\( 3+3+3+3 \)
\( 3\times4 \)
You can only combine like terms! Numbers can only be added to numbers, and variables can only be combined with variables that have the same letter and exponent.
Like terms have the same variable part. For example: and are like terms because they both have 'x'. But 5 and are not like terms.
Not necessarily! You can simplify variable terms first if you prefer. The important thing is to keep like terms separate until you combine them properly.
Same rules apply! Group all constants together, all x-terms together, all y-terms together, etc. Each different variable creates its own group of like terms.
Pick any number for x (like x = 2) and substitute it into both the original expression and your simplified answer. If you get the same result from both, you're correct! ✓
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