What is the answer to this math problem
1 answer:
Y + x = 5x + 3 12 - y = x + 2y Isolate x in the first equation, then substitute its expression into the second equation to find y: y + x = 5x + 3 x = 5x - y + 3 -4x = -y + 3 x = y - 3/4 --- 12 - y = x + 2y 12 - y = (y - 3/4) + 2y 48 - 4y = y - 3 + 8y 48 - 4y = 9y - 3 -4y = 9y -51 -13y = -51 y = 51/13 Substitute this into the first equation to find x: 51/13 + x = 5x + 3 x - 5x = 3 - 51/13 -4x = -12/13 x = 3/13 Lastly, substitute back into both original equations to check work; y + x = 5x + 3 --> 51/13 + 3/13 = 5(3/13) + 3 --> 54/13 = 54/13 12 - y = x + 2y --> 12 - 51/13 = 3/13 + 2(51/13) --> 105/13 = 105/13 Answer: x = 3/13 y = 51/13 Hope this helps.
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Is that the right equation?
Well, variables are stuff like x and y because they can represent a number. They are variable in an equation. so if you have (3x^3)+(5X^2)+Y+9 then your variables are x X and Y (im assuming the capital X is there and not a typo) if that was a typo and meant to be lowercase, then its just a 2 variable with the x and y
7+8 is the answer But it can also be 11
The answer is x = 1 and y = -3 <span>[1] 6x-9=y
[2] y=-3x</span>
Answer:
Infinitely many solutions.
Step-by-step explanation:
12(x+3)=4(2x+9)+4x
12x+36=8x+36+4x
12x+36=12x+36
infinitely many solutions