Solve the equation for the indicated variable.
5(4r-3c)-2(7r-9c)=0 solve for r
I will be happy to critique your work.
first-distribute
second-put like terms together
third- get r on one side
i didn't do the problem. but that's the steps
This is all I know how to do and don't know if it's even right.
5(4r-3c)-2(7r-9c)=0 solve for r
20r-15c-14r-11c=0
6r-26c=0
To solve the given equation for the variable r, we will start by simplifying the equation step by step:
1. Distribute the coefficients to each term within the parentheses:
5 * 4r - 5 * 3c - 2 * 7r + 2 * 9c = 0
This simplifies to:
20r - 15c - 14r + 18c = 0
2. Combine like terms:
(20r - 14r) + (-15c + 18c) = 0
6r + 3c = 0
3. Isolate the variable r by moving the term that contains r to the other side of the equation:
6r = -3c
4. Solve for r by dividing both sides of the equation by the coefficient of r, which is 6:
r = (-3c) / 6
Finally, the equation is solved for r as:
r = -0.5c
So, the value of r can be expressed as -0.5 times the value of c.