Solve the exercise below given that:
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Solve the exercise below given that:
We start by substituting the value of
First, we perform the calculation in parentheses
After this, we solve the parentheses and can continue with the simple multiplication exercise.
56
\( 9+3-1= \)
Always substitute first! When you're given a specific value for the variable, replace it immediately. This turns algebra into simple arithmetic: becomes .
No problem! If you get , just substitute X=4: . You'll get the same answer, but it's more work.
Without parentheses, you might calculate 4+4×3+4 = 4+12+4 = 20 instead of (4+4)×(3+4) = 8×7 = 56. Always keep the grouping when substituting!
Substitute X=4 back into the original expression and verify: . If your calculation gives the same result, you're correct!
No! gives the same result as because multiplication is commutative. Both equal 56.
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