SOLUTION: solve the equation 2x-3y=12 and x+y=4

Question 299381: solve the equation 2x-3y=12 and x+y=4
Answer by unlockmath(1688) (Show Source): You can put this solution on YOUR website!
Hello,
Let's use substitution for these:
2x-3y=12
x+y=4 Subtract y from both sides to get:
x=4-y Now we can plug this into the first equation to get:
2(4-y)-3y=12 Are you with me? OK now solve for y:
8-2y-3y=12 Subtract 8 and divide by -5 to get:
y=-4/5
From here plug this into either of the original equations. I'll choose the second one.
x+(-4/5)=4 Add 4/5 to both sides and:
x=4 4/5
You can check these answers by plugging it into either equation.
Make Sense?
RJ
www.math-unlock.com
RELATED QUESTIONS
solve for x in the equation... (answered by College Student)

Help me!!! Solve the equation for y: 2x+3y=6 3x+4y=12... (answered by strawberry)

Solve the system of equation: 3x+2y=11 2x-2y=4 Solve the system: 2x-y+2z=11... (answered by mangopeeler07)

Find the y-intercept and the x-intercept for the equation 2x+3y=12 (answered by Greenfinch)

Solve System of Equation: Solve for x and y. -2x + 3y = 6 x + 2y = -4 (answered by Alan3354)

how to solve this variable linear equation 2x-y=1 6x-3y=3 x+2y=4... (answered by josgarithmetic,solver91311)

Solve the system of linear equations using the Graphing Method. x+3y=12... (answered by haileytucki)

Solve the system of linear equations using the Graphing Method. x+3y=12... (answered by mananth)

Please help me solve the following system of equation. -5x-3y=12 -2x-5y=1 x= y= (answered by ewatrrr)