Question

a) (+23) – (-14) + (-13) – (-10) b) (+12) – (-34) – (-8) c) -10+ (-12 +16) – (-5) d) { (-5) + (-4) – (-6)} + ( 8) – (-5)

Answer 1

LETRA A

$\left(23\right)-\left(-14\right)+\left(-13\right)-\left(-10\right)\\\\=\left(23\right)+14+\left(-13\right)-\left(-10\right)\\\\=37+\left(-13\right)-\left(-10\right)\\\\=37-13-\left(-10\right)\\\\24-\left(-10\right)\\\\=24+10\\\\=34$

LETRA B

$\left(12\right)-\left(-34\right)-\left(-8\right)\\\\=\left(12\right)+34-\left(-8\right)\\\\=46-\left(-8\right)\\\\=46+8\\\\=54$

LETRA C

$-10+\left(-12+16\right)-\left(-5\right)\\\\=-10+4-\left(-5\right)\\\\=-1$

LETRA D

$\left(-5\right)+\left(-4\right)-\left(-6\right)+\left(8\right)-\left(-5\right)\\\\=\left(-5\right)-4-\left(-6\right)+\left(8\right)-\left(-5\right)\\\\=-9-\left(-6\right)+\left(8\right)-\left(-5\right)\\\\=-3+\left(8\right)-\left(-5\right)\\\\=5-\left(-5\right)\\\\=5+5\\\\=10$

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