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= 10x + 8 - 3x + 21
= 7x + 29
b ) 4(6x - 3) - 5(4x - 5)
= 24x - 12 - 20x + 25
= 4x + 13
c ) 2(x - 3) - 4(2x + 1)
= 2x - 6 - 8x - 4
= -6x - 10
= -2 (3x + 5)
g ) -3(-2x + 5) + 2(-1 + 2x)
= 6x - 15 - 2 + 4x
= 10x - 17
h ) 5(-x + 2) + 4(3x - 4)
= -5x + 10 + 12x - 16
= 7x - 6
Maaf jika ada kesalahan