Question

Tính nhanh:

a) -5+(-37)-45+151-37+151

b) 53-145-359-53+145-259

Answer 1

a: Ta có: \(-5+\left(-37\right)-45+151-37+151\)

\(=\left(-5-45\right)-\left(37+37\right)+2\cdot151\)

\(=-50-74+302\)

=178

b: Ta có: \(53-145-359-53+145-259\)

\(=\left(53-53\right)-\left(145-145\right)-\left(359+259\right)\)

\(=-618\)