25-6[-7x-4{-6x+3(4-5+6x)}]
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Step-by-step explanation:
25-6[-7x-4{-6x+3*4-5+6x)}]
19[-7x-4{-6x+3(-1+6x)}]
19[-7x-4{-6x-3+18x)}]
19[-7x-4{12x-3)}]
19[-7x-48x+36]
19[-55x+36]
-1045x+1980
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