19.2k views
2 votes
4x + 6y = 9

2x = 4 - 3y

Please explain how you got your answer please. it’ll help me.

User Gordak
by
4.5k points

1 Answer

2 votes

Answer:

The answer is no solutions.

Explanation:

use systems of equations!

first, rewrite both equations so that the sum or difference includes the same variable.


9-4x=6y\\-4+2x=-3y

notice how i made sure the coefficients that have x and y respectively line up.

with this, i can cancel out the x variables by making 2, and -4 as -8 (8+-8=0).

rewrite the equation.


2(9-4x=6y)\\4(-4+2x=-3y)\\

distribute.


18-8x=12y\\-16+8x=-12y

now we can successfully cancel out the x variable!


18=12y\\-16=-12y

uh oh! it seems we can also cancel out the y variables..


18=0\\-16=0

18 is not equal to 0 and neither is -16. because of this, we can conclude there is no solution for this system of equations.

hope this helps!!

User Lars Truijens
by
4.1k points