Question

86-[15x-7(6x-9)-2{10x-5(2-3x)}]

Answer 1

86 - [15x-7(6x-9)-2(10x-5(2-3x)}]

86 - [15-42x + 63 -2(10 - 10 + 15x)]

86 - [15 - 42 x + 63 -20 + 20 - 30 x

86 - 15 + 42 x - 63 + 20 -20 +30x

86 - 15 -63 + 42x + 30 x 

86 -78 + 72x

8 + 72x

8(1 + 9x) 



i hope this will help you


-by ABHAY