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zhuklara [117]
4 years ago
14

How do I answer 3(a - 5) = 18

Mathematics
2 answers:
viva [34]4 years ago
7 0

To solve this, you need to isolate/get the variable "a" by itself in the equation:

3(a - 5) = 18          Divide 3 on both sides

\frac{3(a-5)}{3} =\frac{18}{3}

a - 5 = 6          Add 5 on both sides to get "a" by itself

a - 5 + 5 = 6 + 5

a = 11

PROOF

3(a - 5) = 18      Substitute/plug in 11 into "a" since z = 11

3(11 - 5) = 18

3(6) = 18

18 = 18

Kitty [74]4 years ago
6 0

Answer:

a=11

Step-by-step explanation:

used MathPapa

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