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38 votes
38 votes
How do I solve

-3(1+6r)=14-r

User Ian Medeiros
by
2.7k points

2 Answers

22 votes
22 votes

Answer: -1

Explanation:

Multiply -3 to (1+6r)

-3 - 18r = 14 - r

Then, group like terms and change the signs

-18r + r = 14 + 3

Add

-17r = 17

Divide 17 by 17 to solve for r

r = 17/-17

r = -1

User Yarh
by
2.4k points
28 votes
28 votes
Answer: r = -1

Step by step: -3(1 + 6r) = 14 - r
Start by distributing the -3 into the parenthesis
-3 -18r = 14 -r
Now add 3 to each side to eliminate it from the left
-18r = 17 -r
Now add 1r on each side to eliminate it from the left
-17r = 17
Now divide -17 by both sides
R = -1
User Joe Wicentowski
by
2.4k points