3 years ago

“y=3x-4 and -2y=-6x+a” can someone help me figure out the math to solve for A?

Mathematics

1 answer:

avanturin [10]3 years ago

8 0

Answer:

a=-4 ??

Step-by-step explanation:

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Solve the system by substitution. Check your solution.

postnew [5]

Answer:

(9,126)

Step-by-step explanation:

Make sure x and y are on the same side

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Eliminate y by multiplying the first equation by 4 then adding both equations together

$2x+1y=144\\16x-1y=18\\18x=162\\x=9$

Plug the x value (9) into one of the equations

$16(9)-1y=18$

Solve

$16(9)-1y=18\\144-1y=18\\144=18+1y\\126=y$

x=9, y=126

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Step-by-step explanation:

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