5x + 4y +3z = 14 x = 3z -22 z = 6 What is the y-value of the solution?

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12-05-2020
Mathematics

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5x + 4y +3z = 14 x = 3z -22 z = 6 What is the y-value of the solution?

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rosavo0414 rosavo0414 · Answer 1 · 2020-05-12T19:51:23+02:00

rosavo0414 rosavo0414

12-05-2020

x = 3z - 22
z = 6
5x + 4y + 3z = 14
5 (3z - 22) + 4y + 3 (6) = 14
15z - 110 + 4y + 18 = 14
15 . 6 - 110 + 4y + 18 = 14
90 - 110 + 4y + 18 = 14
90 - 110 + 18 - 14 + 4y = 0
-16 + 4y = 0
4y = 16
y = 4

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