This is a system of equations. You can solve it by substitution or elimination. I'm going to use substitution x - 2y = -4.5; add 2y to each side x - 2y + 2y = -4.5 + 2y; simplify x = 2y - 4.5 2(2y - 4.5) + 3y = 12 4y - 9 + 3y = 12 7y - 9 = 12 7y - 9 + 9 = 12 + 9 7y = 21 y = 3 <--------first answer x - 2y = -4.5 x - 2(3) = -4.5 x - 6 = -4.5 x -6 + 6 = -4.5 + 6 x = 1.5 <--------second answer Check: 2(1.5) + 3(3) = 12? 3 + 9 = 12? 12 = 12; It checks 1.5 - 2(3) = -4.5? 1.5 - 6 = -4.5? -4.5 = -4.5; It checks x = 1.5 and y = 3 <-----------Final Answer
Answer:
1 + x = 3
Step-by-step explanation:
x is 2
.............
Answer:
x=y
Step-by-step explanation:
Answer:
<em>no solution</em>
Step-by-step explanation:
Try getting a variable by itself, (I'm going to do so with 2x)
In order to do that I need to subtract 3y from both sides
The equation should now be
2x= -3y+4
Now divide by 2 to get x by itself
x= -3/2y+2
You can now plug x into 4x+6y=9
4(-3/2y+2)+6y=9
Distribute 4
-6y+8+6y=9
y cancels out and you're left with 8=9, which is untrue, so the answer is no solution
<em>so</em><em> </em><em>x=-2</em><em>.</em>
<em>hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em>
