princeevee
princeevee
10-02-2017
Mathematics
contestada
what is the value of X?
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egwstl
egwstl
15-02-2017
9/72= 3x-20 / 56 - making comparisons & proportions
9 x 56 = 72 ( 3x - 20 ) - cross multipling
504 = 216 x - 1440 - solve for x
1944 = 216x
x = 9
Hope this helps!
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