Answers

2015-11-19T22:38:05+08:00
4:7 can be 7-4=3
48/3=16 so
16x4=64
16x7=112
the two number is 64 and 112 their difference is 48
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2015-11-20T11:12:45+08:00
4x-7x=48
3x=48
x=16
substitute the value of x.
4(16)= 64
7(16)=112
sum is 176.
to check
112-64=48
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