7 − 6 ⋅ ( 5 7 + 7 ) = 7 − 6 ⋅ 7 ⋅ ( 5 1 + 1 ) = 7 − 42 ⋅ 5 6 = 7 − 50 5 2 = − 42 5 3
7 − 6 ( 5 7 + 7 ) = 7 − 6 ( 5 7 + 5 35 ) = 7 − 6 ⋅ 5 42 = 7 − 5 252 = 7 − 50 5 2 = − 43 5 2
To solve the expression 7 − 6 ( 5 7 + 7 ) , first simplify the expression in the parentheses to get 5 42 , then multiply by -6 to get 5 − 252 . Finally, subtract from 7 which leads to the answer of 5 − 217 or − 43.4 .
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