6a+5b=4.54 3a+7b=3.17

asked Jan 6, 2022 70.4k views

3 votes

6a+5b=4.54
3a+7b=3.17

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2 votes

$6a = 4.54 - 5b \\ a = (227)/(300) - (5)/(6) b \\ 6a = 4.54 - 5b \\ a = (227)/(300) - (5)/(6) \\ 3( (227)/(300) - (5)/(6) b) + 7b = 3.17$

$3( (227)/(300) - (5)/(6) b) + 7b = 3.17 \\ (227)/(100) - (5)/(2)b + 7b = 3.17 \\ (9)/(2)b = 0.9 \\ b = 0.2 \\ a = 0.59$

Balping answered Jan 11, 2022

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