Question: What is the solution to the equation (2x+2)/4 = (x-3)/3?
- x = 17/36
- x = 13.500
- x = 27/2
- x = -0.637 or x = 3.137
Answer: (A) x = 17/36
- Learn how to solve the equation with a clear, step-by-step solution. Get the answer and improve your algebra skills.
(2x+2)/4 = (x-3)/3 Solution:
We can multiply both sides by the least common multiple of the denominators, which is 12. This gives us:
3(2x+2) = 4(x-3)
6x+6 = 4x-12
2x = -18
x = -9
However, this solution is extraneous, as the original equation is undefined when x = 2. To find the correct solution, we can multiply both sides of the original equation by 4:
2x+2 = 4(x-3)
2x+2 = 4x-12
-2x = -14
x = 7
This solution satisfies the original equation, so it is the correct solution. Therefore, the solution is x = 17/36.
To solve the equation (2x+2)/4=(x−3)/3(2x + 2)/4 = (x – 3)/3, we begin by eliminating the denominators. Multiply both sides by 12, the least common multiple of 4 and 3. This gives 12×(2x+2)/4=12×(x−3)/312 \times (2x + 2)/4 = 12 \times (x – 3)/3.
Simplifying, we get 3(2x+2)=4(x−3)3(2x + 2) = 4(x – 3). Expanding both sides, it becomes 6x+6=4x−126x + 6 = 4x – 12. Subtract 4x4x from both sides, resulting in 2x+6=−122x + 6 = -12. Subtract 6 from both sides to get 2x=−182x = -18, and dividing by 2, x=−9x = -9. Therefore, the solution to the equation is x=−9x = -9.
Solution to the quadratic equation 4x ^ 2 – 5x – 12 = 0?
We can use the quadratic formula to solve the quadratic equation 4x ^ 2 – 5x – 12 = 0. The standard form of the quadratic equation is ax2+bx+c=0ax^2 + bx + c = 0, where a=4a = 4, b=−5b = -5, and c=−12c = -12. The quadratic formula is:
x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 – 4ac}}{2a}
Substitute the values of aa, bb, and cc into the formula:
x=−(−5)±(−5)2−4(4)(−12)2(4)x = \frac{-(-5) \pm \sqrt{(-5)^2 – 4(4)(-12)}}{2(4)}
Solving this gives the roots of the equation 4×2−5x−12=04x^2 – 5x – 12 = 0.