tinh : 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=-66×(1/2-1/3+1/11)+124×-37+63×-124
\(C=-66\times(\frac{1}{2}-\frac{1}{3}+\frac{1}{11})+124\times-37+63\times-124\)
\(C=-66\times\frac{17}{66}-124\times100\)
\(C=-12417\)
#)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
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=-66×(1/2-1/3+1/11)+124×-37+63×-124
RC=-66×(1/2-1/3+1/11)+124×-37+63×-124
RC=-66×(1/2-1/3+1/11)+124×-37+63×-124
C=\(-66.\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{11}\right)+124.\left(-37\right)+63\left(-124\right)\)
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
Thuc hien phep tinh:
a.3/7.11/15+3/7:15/14+2/7
b.(-7/15).5/8.15/-7(-32)
c.[(1/9:8/27):-1/3]:81/128
d.-66(1/2-1/3+1/11)+124(-37)+63(-124)