Question

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

Answer 1

x= 1.5

y= 4.125

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`