Answer:x
Explanation:
solve for the x value in the first equation one and plug it into the second equation in order to find the value of the y
3x -6y = 27
3x+4y=17
solution
3x-6y =27 solve for x
3x-6y + 6y = 27 +6y
3x=27 +6y
usually you would simplify to solve for x
but in this case I would leave it as 3x because the second equation requires the value of 3x
so substituting the 27 +6y for 3x
you end up with the equation of 27+6y + 4y = 17 (combine the like terms)
27+10y = 17
subtract the 27 form both sides 10y = 17-27 which simplifies to 10y = 10
divide both sides by 10 and you get y = -1
you then take the value of y which is -1 : y = -1
3x-6y = 27
3x - 6(-1) = 27 :substitute -1 into the top equation
3x +6 = 27 : multiply the -6(-1)
3x=27-6 :subtract both sides by -6
3x = 21 divide both sides by 3
x = 7