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- 5x = 13 - 3
x = 10/ -5
x = -2
b. 3x + 2 = 5x
3x - 5x = -2
-2x = -2
x = -2/ -2
x = 1
c. 1/3(2x-5)=1/2(x+1)
2(2x - 5) = 3 (x + 1)
4x - 10 = 3x +3
4x - 3x = 3 +10
x = 13
d) 2/5(x+3)=1/3(x+1)
3(2x + 6) = 5 (x + 1)
6x + 18 = 5x + 5
6x -5x = 5 - 18
x = -13
insyaalloh benar