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OpenStudy (anonymous):
Can someone help m do this. 4(15-5r) =90
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OpenStudy (gk99):
60 - 20r = 90 -20r = 30 r = -3/2
OpenStudy (gunnar):
ok add 15 to 5r it comes out as 20 so then you divide 20/4= 5 so then divide 90 by 5 90/5=23
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