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Verified answer
7A - 4B= 7 (2x-3) - 4 (4-5x)
= 14x - 21 - 16 +20x
= 34x - 37
Jadi 7A-4B =34x - 37
BAB: SPLDV
Jawab:
A= 2x-3 dan B= 4-5x
nilai 7a-4b
=> 7(2x-3)-4(4-5x)
=> 14x-21-16+20x
=> 34x-37