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OpenStudy (anonymous):
90-x=20+x
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OpenStudy (anonymous):
35?
OpenStudy (anonymous):
90 - 20 = x+x
OpenStudy (anonymous):
70 = 2x
OpenStudy (anonymous):
x = 35
OpenStudy (saifoo.khan):
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OpenStudy (jamesj):
Add x to both sides and you have 90 - x + x = 20 + 2x 2x + 20 = 90 so 2x + 20 - 20 = 90 - 20 2x = 70 So ....
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