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Verified answer
Jawabannya:A. (y-2x)-(5x-3y)
= 5x-3y-y+2x
= 7x-4x
B. (x-5). (x+3)
= x²+3x-5x-15
= x²-2x+15
# Semoga Membantu
Maaf Kalo Salah
1) 7x-4y
2) x^2-2x-15
Maaf kalo salah yaaa