x - y = 3 2x + 3y = 7
Matematika
Cutely169
Pertanyaan
x - y = 3
2x + 3y = 7
2x + 3y = 7
1 Jawaban
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1. Jawaban phita99
substitusi persamaan:
x-y=3 ×2 2x-2y=6
2x+3y=7 ×1 2x+3y=7
y=-1
eliminasi y ke persamaan:
x-y=3
x+1=3
x=3-1
x=2