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2x+60=30+5x
2x-5x=30-60
-3x=-30
x=-30/-3
x=10
2/3(x-5)=1/2x
2/3x-10/3=1/2x kali 6
4x-20=3x
4x-3x=20
x=20
x/5(10) + 6(10) = 3(10) + x/2(10)
x(2) + 60 = 30 + x(5)
2x + 60 = 30 + 5x
2x - 5x = 30 - 60
-3x = -30
x = 10
Himpunan Penyelesaian = {10}
b) 2/3(x - 5) = 1/2x
2/3x - 10/3 = 1/2x
2/3x(6) - 10/3(6) = 1/2x(6)
2x(2) - 10(2) = 1x(3)
4x - 20 = 3x
4x - 3x = 20
x = 20
Himpunan Penyelesaian = {20}