Question

7x+12y=220 the number of solution is

Answer 1

Hello user !

Refer to the attachment !

Number of solutions is three !
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Answer 2

Hola Mate!!

Your answer :-

↪ You can find many solutions!

$equation ↪ 7x + 12y = 220 \\lets \: bring \: a \: change... \\ ↪ 7x = 220 - 12y \\ \\ solutions.... \\ \\ a) \: let \: x = 0 \\ ↪ 7(0) = 220 - 12y \\ ↪ 0 = 220 - 12y \\ ↪ - 220 = - 12y \\ ↪ \frac{ - 220}{ - 12} = y \\ ↪ \frac{ 55}{ 3} = y \\ \\ b) \: let \: x = 2 \\ ↪ 7(2) = 220 - 2y \\ ↪ 14 =220 - 12y \\ ↪ 14 - 220 = - 12y \\ ↪ - 206 = - 12y \\ ↪ \frac{ - 206}{ - 12} = y \\ ↪ \frac{ 103}{ 6} = y \\ \\ c) \: let \: x = 4 \\ ↪ 7(4) = 220 - 12y \\ ↪ 28 = 220 - 12y \\ ↪ 28 - 220 = - 12y \\ ↪ - 192 = - 12y \\ ↪ \frac{ - 192}{ - 12} = y \\ ↪ 16 = y \\ \\ d) \: let \: x = 6 \\ ↪ 7(6) = 220 - 12y \\ ↪ 42 = 220 - 12y \\ ↪ 42 - 220 = - 12y \\ ↪ - 178 = - 12y \\ ↪ \frac{ - 178}{ - 12} = y \\ ↪ \frac{ 89}{ 6} = y$

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