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Anonymous
Do you mean: r = (4q-5p)/9?
If so then: p = (9r-4q)/-5
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X = 32
n/9 = 16 Multiply both sides by 9:- n = 144
5/9=x/27 135=9x 15=x
2/9=x/72 144=9x 16=x
h/9=7 multiply both sides by 9 h=63