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3a-2b+3=0
=5a-3b=-4(×3)
3a-2b=-3(×5)
=15a-9b=-12 (-)
15a-10b=-15
=1b=3
b=3/1=3
5a-3b=-4
5a-3(3)=-4
5a-9=-4
5a=-4+9
5a=5
a=5/5=1
jadi,sistem persamaannya adalah (1,3)
3a - 2b + 3 = 0 => 3a - 2b = -3
5a - 3b = -4 I x3 I 15a - 9b = -12
3a - 2b = -3 I x5 I 15a - 10b= -15 -
b = 3
3a - 2b = -3
3a - 2(3) = -3
3a = -3 + 6
a = 3/3
a = 1
himpunan penyelesaian = (1,3)