\(A=-66.\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{11}\right)+124.\left(-37\right)+63.\left(-124\right)\)

\(A=-66.\left(\frac{33}{66}-\frac{22}{66}+\frac{6}{66}\right)+\left(-124\right).\left(37+63\right)\)

\(A=-66.\frac{17}{66}+\left(-124\right).100\)

\(A=-17+\left(-12400\right)\)

A = -12417

C=-66.(1/2-1/3+1/11)+124.(-37)+63.(-124)

C=-66.17/66-124.(37+63)

C=-17-124.100

C=-12417

Bài làm:

Ta có: 

\(B=-66\cdot\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{11}\right)+124.\left(-37\right)+63.\left(-124\right)\)

\(B=\left(-66\right).\frac{1}{2}+66.\frac{1}{3}-66.\frac{1}{11}-124.\left(37+63\right)\)

\(B=-33+22-6-124.100\)

\(B=17-12400\)

\(B=-12383\)

\(B=-66.\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{11}\right)+124.\left(-37\right)+63.\left(-124\right)\)

\(=-66.\frac{1}{2}-\left(-66\right).\frac{1}{3}+\left(-66\right).\frac{1}{11}+\left(-124\right).37+63.\left(-124\right)\)

\(=-33+22-6+\left(-124\right).\left(37+63\right)\)

\(=-11-6+\left(-124\right).100\)

\(=-17-12400\)

\(=-12417\)

\(C=-66\times(\frac{1}{2}-\frac{1}{3}+\frac{1}{11})+124\times-37+63\times-124\)

\(C=-66\times\frac{17}{66}-124\times100\)

\(C=-12417\)

#)Giải :

\(C=\left(-66\right).\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{11}\right)+124.\left(-37\right)+63.\left(-124\right)\)

\(C=\left(-66\right).\frac{17}{66}-4699-7812\)

\(C=\left(-17\right)-4699-7812\)

\(C=-12528\)

C = -66.(1/2 - 1/3 + 1/11) + 124.(-37) + 63.(-124)

C = -66.(1/2 - 1/3 + 1/11) - 124.37 - 63.124

C = -17 - 4588 - 7812

C = -12417