A multiplying number machine changes one fraction into another fraction by using a rule it changed 1/2into1, /10, 1/7into1/35, 2/3into2/15
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f(x) = x * 1/5
proof :-
f(1/2) = 1/2 * 1/5 = 1/10
f(1/7) = 1/7 * 1/5 = 1/35
f(2/3) = 2/3 * 1/5 = 2/15
proof :-
f(1/2) = 1/2 * 1/5 = 1/10
f(1/7) = 1/7 * 1/5 = 1/35
f(2/3) = 2/3 * 1/5 = 2/15
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