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Verified answer
3.c)8(3x + 4y) -5(4x-6y)
= 24x +32y - 20x + 30y
= 24x - 20x + 32y + 30y
= 4x +62y
4.b)
= 6p - 5q - 2r + -8p + 6p +9r
= 6p -8p -5q+6q -2r+9r
= -2p+q +7r
5.d)
= 4p - 11q- 9r- (-8p + 10q - 9r)
= 4p + 8p - 11q - 10q - 9r + 9r
= 12p - 21q
Verified answer
A) 8(3x + 4y) -5(4x-6y)24x+32y-20x+30y
=4x+62y
B)6p - 5q - 2r dan -8p + 6q +9r
6p-5q-2r-8p+6p+9r
=-2p+q+7r
C) -8p+10q-9r dari 4p-11q-9r
=4p-11q-9r-(-8p+10q-9r)
=4p-11q-9r+8p-10q+9r
=12p-21q