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3x - 2y = -16 |× 2| 6x - 4y = -32 -
13 y = 65
y = 65 ÷ 13
y = 5 = b
2x + 3y = 11
2x + 3(5) = 11
2x + 15 = 11
2x = 11 - 15
2x = -4
x = -4 ÷ 2
x = -2 = a
-3a + 2b = -3(-2) + 2(5)
= 6 + 10
= 16
Semoga bermanfaat.
Jangan lupa untuk kasih bintang & terima kasih :D
Salam,
Dissa Dhatu