Evaluate the expression −12 + 9a − 2ab - 6b when a=5 and b=3.

Step 1: Substitute a=5 and b=3 into the expression. −12 + 9(5) − 2(5)(3) − 6(3) Step 2: Perform the multiplications. −12 + 45 − 30 − 18 Step 3: Perform the additions and subtractions from left to right. (−12 + 45) − 30 − 18 = 33 − 30 − 18; (33 − 30) − 18 = 3 − 18; 3 − 18 = −15 The value of the expression is: −15

Evaluate the expression −12 + 9a − 2ab - 6b when a=5 and b=3.

Step 1: Substitute a=5 and b=3 into the expression. −12 + 9(5) − 2(5)(3) − 6(3) Step 2: Perform the multiplications. −12 + 45 − 30 − 18 Step 3: Perform the additions and subtractions from left to right. (−12 + 45) − 30 − 18 = 33 − 30 − 18; (33 − 30) − 18 = 3 − 18; 3 − 18 = −15 The value of the expression is: −15

Solved: Evaluate the expression −12 + 9a − 2ab - 6b when…

Substitute $a=5$ and $b=3$ into the expression.
$-12 + 9(5) - 2(5)(3) - 6(3)$
Perform the multiplications.
$-12 + 45 - 30 - 18$
Perform the additions and subtractions from left to right.
$(-12 + 45) - 30 - 18 = 33 - 30 - 18$ $(33 - 30) - 18 = 3 - 18$ $3 - 18 = -15$
The value of the expression is:
$\textbf{-15}$

Evaluate the expression -12 + 9a - 2ab - 6b when a=5 and b=3.

Answer

Step-by-step solution

Substitute $a=5$ and $b=3$ into the expression.

Perform the multiplications.

Perform the additions and subtractions from left to right.

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