Mathematics: 2) Use the elimination method to solve for x and y. equation 1: -x/3 - y/6 = -4 equation 2: -x/6 + y/2 = -9 solve for y solve for x

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2) Use the elimination method to solve for x and

Ответ:

asims13

06.02.2022

Mathematics

$y = - 3. \\ x = - 13.5$

Step-by-step explanation:

$equation 1: -x/3 - y/6 = -4 \: \: = - \frac{x}{3} - \frac{y}{6} = - 4 \\ \\ equation 2: -x/6 + y/2 = -9 \: \: = - \frac{x}{6} + \frac{y}{2} = - 9 \\ \\ - \frac{x}{3} - \frac{y}{6} = - 4 \\ - 6x - 3y = - 72 ...(eq3.) \\ \\ - \frac{x}{6} + \frac{y}{2} = - 9 \\ - 2x + 6y = - 9...(eq4.) \\ \\ \\ 2 \times - 6x - 3y = - 72 ...(eq3.) = - 6y = -1 44 \\6 \times - 2x + 6y = - 9...(eq4.)= - 36y = -54 \\ - 6y - ( - 36y) = - 144 - ( - 54) \\ 30y = - 90 \\ y = - \frac{90}{30} \\ y = - 3. \\ x = - 13.5$

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2) Use the elimination method to solve for x and y. equation 1: -x/3 - y/6 = -4
equation 2: -x/6 + y/2 = -9

solve for y
solve for x

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