Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!

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Question 141801: 5x+10=15
6x-12=18
2x+11=21
6x-16=20
4x+12=24: 5x+10=15
6x-12=18
2x+11=21
6x-16=20
4x+12=24
Answer by nabla(409) About Me  (Show Source):
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5x+10=15
x=1
6x-12=18
x=5

2x+11=21
x=5
6x-16=20
x=6

4x+12=24
x=3
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