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andrey2020 [161]
2 years ago
8

-90 = -2(6a – 3) Pls help just solving an equation. :)

Mathematics
1 answer:
Ksenya-84 [330]2 years ago
7 0

Answer:

a=8

Step-by-step explanation:

We are asked to solve this equation -90=-2(6a-3) . As here our variable is a , we will solve it for a. Let us do it step by step

1. Opening the brackets and distribution of -2 inside

-90=-12a+6

2. Subtracting 6 from both sides we get

-90-6=-12a+6-6

-96=-12a

3. Dividing both sides by 12 we get

\frac{-96}{-12}=\frac{-12a}{-12}

a=8

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Step-by-step explanation:

There are two case I used, since we are not give diagram, so I assumed that U can be the right angle and also assume that W can be the right angle so, I used both assumption to solve, check attachment

1. Using Trigonometry

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Read 2 more answers
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