171k views
2 votes
Solve the Equation.

1. 2r - 8 + 5r = 10+r
show your work

Solve the formula for the indicated variable.

T= 3u/E, for U

User Allgaeuer
by
8.7k points

2 Answers

2 votes

1.

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 your answer will be r = 3.

2.

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

Lastly, divide both sides by 3, and your answer will be
(TE)/(3)=u

User Carmelita
by
7.2k points
2 votes

Answer: 1. r=3 2.
U=(T)/(3)

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=(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=(T)/(3)

User Pevik
by
9.6k points

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