30x+40(15-x)=520 please help me?
Matematika
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Pertanyaan
30x+40(15-x)=520 please help me?
2 Jawaban
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1. Jawaban AnugerahRamot
30x+40(15-x)=520
=>30x+600-40x=520
=>-10x+600=520
=>10x=600-520
=>10x=80
x=8 -
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