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Anonymous
11
Beryl Cassin ∙
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If x - (-15) = 11 then x = -4.
3/5 x 5/12 x 4/15 = 3 x 5 x 4/5 x 12 x 15= 5 x (3 x 4)/5 x 12 x 15= 1/15
4x-15=1 15+1=16, 16/4=x=4 x=4
x2 - 19x + 60 = x2 - 15x - 4x + 60 = x(x - 15) - 4(x - 15) = (x - 15)(x - 4)
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