\(9 - ( -2 ) = 9+2=11\)
\(27 - 30 =-3\)
\(( - 7 ) - 4 = -11\)
\(( - 63 ) - ( - 15 ) =-63+15=-48\)
thực hiện các phép trừ sau
9 - ( -2 ) = ..9+2=11...
27 - 30 = ...27+(-30)=-3...
( - 7 ) - 4 = .(-7)+(-4)=-11....
( - 63 ) - ( - 15 ) = .(-63)+15=.-48...
9 - ( -2 ) = 9 + 2 = 11
27 - 30 = -3
( - 7 ) - 4 = -11
( - 63 ) - ( - 15 ) = ( - 63 ) + 15 = - 48
9 - (-2) = 11
27 - 30 = -3
-7 - 4 = -11
-63 - (-15) = -48
\(9-\left(-2\right)=9+2=11\)
\(27-30=27+\left(-30\right)=\left(-3\right)\)
\(\left(-7\right)-4=\left(-7\right)+\left(-4\right)=\left(-11\right)\)
\(\left(-63\right)-\left(-15\right)=-63+15=-48\)
