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I need help on how to do # 18 I literally can't even figure it out

I need help on how to do # 18 I literally can't even figure it out
asked 207k views
3 votes
I need help on how to do # 18 I literally can't even figure it out

I need help on how to do # 18 I literally can't even figure it out-example-1
asked
User Yoeri
by
7.8k points

1 Answer

5 votes
set 3x+5=x+15.
solve for x

3x=x+15-5
3x-x=15-5
2x=10 divide by 2 on each side
x=5
answered
User Rigi
by
7.6k points
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