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Mathematics, 25.06.2019 02:00 blaizelange2573

2a+3r+1.5p=29.75 (1) a+r+p=13.50 (2) a+3r+4p=29.00 (3) eliminate a by multiplying equation (2) by -1 and adding it to equation (3).

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2a+3r+1.5p=29.75 (1) a+r+p=13.50 (2) a+3r+4p=29.00 (3) eliminate a by multiplying equation (2) by -1...
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