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3 years ago

Find the solution of the system of equations. – 2 – 8y = -30 2x + 8y = 36

Mathematics

1 answer:

nydimaria [60]3 years ago

3 0

Answer:

x= 1.5

y= 4.125

Step-by-step explanation:

Step one:

given the two equations

$-2x - 8y = -30-------1\\\\2x + 8y = 36--------2$

Step two:

let us subtract the equations

$-2x - 8y = -30-------1\\\\ -(2x + 8y = 36)--------2\\\\0x-16y=-66$

$-16y=-66\\\\16y=66$

divide both sides by 16

$y=66/16\\\\y=4.125$

put y= 4.125 in equation 2

$2x + 8(4.125)= 36\\\\2x+33=36\\\\2x=36-33\\\\2x=3\\\\x= 3/2\\\\x= 1.5$

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