a: \(4167+219+\left(-167\right)+71\)
\(=\left(4167-167\right)+\left(219+71\right)\)
=4000+290
=4290
b: \(2645+\left(-198\right)+\left(-645\right)+498\)
\(=\left(2645-645\right)+\left(498-198\right)\)
=2000+300
=2300
c: \(\left(-2\right)+\left(-4\right)+6+8+10\)
\(=\left(-2-4+6\right)+8+10\)
=0+8+10
=18
d: \(\left(-1\right)+3+\left(-5\right)+7+\left(-9\right)+11\)
\(=\left(-1+3\right)+\left(-5+7\right)+\left(-9+11\right)\)
=2+2+2
=6
e: \(\left(-2\right)+4+\left(-6\right)+8+\left(-10\right)+12\)
\(=\left(-2+4\right)+\left(-6+8\right)+\left(-10+12\right)\)
=2+2+2
=6
g: \(\left(-1951\right)+768+951+\left(-868\right)\)
\(=\left(-1951+951\right)+\left(768-868\right)\)
=-1000-100
=-1100
giúp với giúp với giúp e với ạ. e cảm ơn
