Sonny substituted 5 for x in the proportion 16/x =48/12 and cross multiplied to get 240 = 240. Why is this?
1 answer:
16 / 5 = 48 / 12
16 * 12 = 5 * 48
192 = 240
which is incorrect so 5 cannot be the solution of the equation.
substituting 4 for x will give you 192=192
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