Sederhanakan aljabar berikut.
a.8p - 3 + (-3p) + 8
b.9m + 4mn + (-12m) - 7mn
c.2a² + 3ab - 7 - 5a² + 2ab - 4
a.8p - 3 + (-3p) + 8
b.9m + 4mn + (-12m) - 7mn
c.2a² + 3ab - 7 - 5a² + 2ab - 4
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8p - 3 + (-3p) + 8
= 8p - 3 - 3p + 8
= 5p + 5
soal B
9m + 4mn + (-12m) - 7mn
= 9m + 4mn - 12m - 7mn
= -3m - 3mn
soal C
2a² + 3ab - 7 - 5a² + 2ab - 4
=-3a² + 5ab - 11