What is 9/40+1/8-7/15 ?

The solution to 9/40+1/8-7/15 is -7/60

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simplify 9/40+1/8-7/15

simplify

\frac{9}{40} + \frac{1}{8} - \frac{7}{15}

- \frac{7}{60}

Solution steps

\frac{9}{40} + \frac{1}{8} - \frac{7}{15}

Least Common Multiplier of

40, 8, 15 : 120

Adjust Fractions based on the LCM

= \frac{27}{120} + \frac{15}{120} - \frac{56}{120}

Apply the fraction rule:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{27 + 15 - 56}{120}

Add the numbers:

27 + 15 - 56 = - 14

= \frac{- 14}{120}

Cancel

\frac{- 14}{120} : - \frac{7}{60}

= - \frac{7}{60}

121 - x^{2}

5 (1 - x)^{2} - 6 (x^{2} - 3 x - 7) = x (x - 3) - 2 x (x + 5) - 2

lo g_{2} (\frac{1}{8})

\frac{12 !}{4 ! 8 !}