Mary is 9 years younger than anne. tom is twice older than anne. the sum of their ages is 95. how old is mary, tom and anne
2 answers:
M = A - 9
T = 2A
M + A + T = 95
A - 9 + A + 2A = 95
4A = 104
A = 26
M = (26) - 9 = 17
T = 2A = 52
Tom is 52, Anne is 26, Mary is 17
Anne is
Mary is 17, Anne is 26, Tom is 52
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I will do it as
4x^2-9=(2x-3)(2x+3)
2x(2x)=4x^2
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