Tentukan penjumlahan dari: a. 4p+3q dan 5p-2q b. 7xy-3x+5 dan 5xy+x

A) 4p + 3q + 5p - 2q = 9p + q

B) 7xy - 3x + 5 + 5xy + x = 12xy - 2x + 5

a)
(4p + 3q) + (5p - 2q)
= 4p + 3q + 5p - 2q
= 4p + 5p + 3q - 2q
= 9p + q

b)
(7xy - 3x + 5) + (5xy + x)
= 7xy - 3x + 5 + 5xy + x
= 7xy + 5xy - 3x + x + 5
= 12xy - 2x + 5
= -2x + 12xy + 5