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andreyandreev [35.5K]
3 years ago
12

Solve the Equation.

Mathematics
2 answers:
Ugo [173]3 years ago
7 0

Answer: 1. r=3      2.   U=\dfrac{T}{3}

Step-by-step explanation:

1. Given equation : 2r - 8 + 5r = 10+r

To solve this for r , we add 8 and subtracting r on both sides , we get

2r+5r-r=10+8

Now, combine like terms, we get

6r=18

Dividing 6 on both sides , we get

r=3

2. Given equation : T=\dfrac{3U}{E}

To solve for U , we first multiply E on both sides , we get

T= 3U

Now, divide 3 on both sides , we get

U=\dfrac{T}{3}

IgorLugansk [536]3 years ago
4 0
<h2>1.</h2>

Firstly, combine like terms: 7r-8=10+r

Next, subtract r on both sides of the equation: 6r-8=10

Next, add 8 onto both sides of the equation: 6r=18

Lastly, divide both sides by 6 and <em><u>your answer will be r = 3.</u></em>

<h2>2.</h2>

Firstly, multiply both sides by e: TE=3u

Lastly, divide both sides by 3, and <em><u>your answer will be \frac{TE}{3}=u</u></em>

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