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3 years ago

Solve 4(r+1.9)-9r=12.2 r= type integer or decimal rounded to the nearest hundredth as needed

Mathematics

1 answer:

zimovet [89]3 years ago

6 0

4(r+1.9)-9r=12.2
4r + 7.6 -9r = 12.2
-5r = 12.2 - 7.6
-5r = 4.6
r = 4.6/-5
r = - 0.92

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