Question

simplify the following 11/12+-17/4+-4/9- -15/8
explain me step by step
in the back of book answer is 137/72​

Answer 1

Step-by-step explanation:

11 / 12 + (-17 / 4 ) + (-4 / 9) - (- 15 / 8)

as we know -(-) = + and + (-) = -

11 / 12 - 17 / 4 - 4 / 9 + 15 / 8

take LCM of 12 , 4 , 9 and 8 which is : 72

11 x 6 - 17 x 18 - 4 x 8 + 15 x 9 / 72

66 - 306 - 32 + 135 / 72

-137 / 72