1.

63- (-3) {-2-8-3}÷ 3{5+(-2) (-1)}​

Answer»

63−(−3)[{−2− 8−3 }÷3{5+(−2)(−1)}]=63−(−3)[{−2−5}÷3{5+2}]=63−(−3)[−7÷21]=63−(−3)[ 3−1 ]=63−1=62



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