9. 86 - [15x - 7(6x - 9) - 2{10x - 5(2-3x)}]
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Answered by
8
Answer:
Step-by-step explanation:
86-[15X-7 (6X-9)-2 {10X-5 (2-3X)}]
=86-[15X-(42X-63)-2 {10X -(10-15X)}]
=86-[15X - (42X-63)-2 {10X -10X +15X }]
=86-[15X -(42X -63)-2 {15X }]
=86-[15X -(42X -63)-{30X }]
=86-[15X -42X +63-30X]
=86-[-57X+63]
=86+57X -63
=23-+57X
=57X +23 is the answer
Answered by
3
Step-by-step explanation:
86-{15x-42x+63}-2(10x-10+15x)
= 86-(37x+63-20x+20-30x)
=86-(-13x + 83 )
=86+13x+83
=13x +169
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