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jimin bts cute 27/07/2018 at 01:56
a, \(\left[\left(-13\right)+\left(-15\right)\right]+\left(-8\right)\)
\(=\left(-28\right)+\left(-8\right)\)
\(=-36\)
b, \(-\left(-129\right)+\left(-119\right)-301+12\)
\(=129-119-301+12\)
\(=10-301+12\)
\(=\left(-291\right)+12\)
\(=-279\)
c, \(500-\left(-200\right)-210-100\)
\(=300-\left(210+100\right)\)
\(=300-310\)
\(=-10\)
d, \(777-\left(-111\right)-\left(-222\right)+20\)
\(=777+111+222+20\)
\(=888+242\)
\(=1130\)
poodle selected this answer.