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x = -3
b. 3/4x + 9/4 + 1/2x - 1/2 = 0
x + 7/4 = 0
x = -7/4
c.
14x+3 = 3(2x+3)
14x + 3 = 6x + 9
8x = 6
x = 6/8 = 3/4
6 - 2x = 4
- 2x = 4 - 6
- 2x = - 2
x =
x = 1
b) (x + 3) + (x - 1) = 0 ....kalikan 4
3(x + 3) + 2(x - 1) = 0
3x + 9 + 2x - 2 = 0
5x + 7 = 0
5x = - 7
x =
c) + = 2x + 3 ..kalikan dgn 6
2(2x - 3) + 3(4x + 4) = 12x + 18
4x - 6 + 12x + 12 = 12x + 18
4x + 12x - 12x = 18 + 6 - 12
4x = 12
x =
x = 3