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3x + 2y = 10. x 3
9x _ 7y = 43. x 1
9x + 6y = 30
9x _ 7y = 43
___________ _
13y = _ 13
y = _ 13/ 13
y = _ 1
3x + 2y 10
3x + ( 2 x _ 1) = 10
3x _ 2 = 10
3x = 10 + 2 = 12
x = 12/3
x = 4
jadi nilai x adalah 4
yang lain kerjakan sendiri ya. Ha Ha ha