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5(x+2) = 7+4
(x+2) = 11/5
2+x = 11/5
x = 11/5 - 10/5 ( 10 dibagi 5 sama dengan 2 )
x = 1/5
-(2+x)
-2-x = 11/5
-x = 11/5 + 10/5
-x = 21/5
x = -21/5
Himpunan penyelesaian = ( x = 1/5 atau x = -21/5 )