15-[12x+7-{11x-(8x-5-6x)+7x}-9x]
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Answer:
Solution is (3+6x)
Step-by-step explanation:
15 -[12x+7-{8x-5-6x)+7x}-9x]
= 15 - [12x+7 - {2x-5+7x} -9x]
= 15 - [ 12x +7 - 9x +5 -9x]
= 15 - [ 12 - 6x]
= 15 - 12 +6x
= 3+ 6x
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