sederhanakanlah a.(3a + 2) - (4a-1) b.(3x + 5) - (2-2x) c.(9a-7) - (2a+3) d.(4x-2) - (-x -3) e.(a-4) - (-3a + 2) f (5x +4) - (-4x + 7) G.3/4a + 1/2a

a) (3a+2) - (4a-1)
= 3a + 2 - 4a +1
= -a + 3
= a - 3
b) (3x+5) - (2+2x)
= 3x + 5 - 2 -2x
= x + 3
c) (9a-7) - (2a+3)
= 9a - 7 - 2a - 3
= 7a - 10
d) (4x-2) - (-x-3)
= 4x - 2 + x + 3
= 5x + 1
e) (a-4) - (-3a+2)
= a - 4 + 3a - 2
= 4a - 6
f) (5x+4) - (-4x+7)
= 5x + 4 + 4x - 7
= 9x - 3
g) 3/4a + 1/2a
• samakan penyebut mnjadi 4a
= 3/4a + 2/4a
= 5/4a

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