d = r t
t = d / r
d/r
Sure. You can always 'solve for' a variable, and if it happens to be the only variable in the equation, than that's how you solve the equation.
The variable is a. You can solve for it, like this: 8a - 9 = 7a - 6 8a = 7a + 3 8a - 7a = 3 a = 3
Add the two equations together. This will give you a single equation in one variable. Solve this - it should give you two solutions. Then replace the corresponding variable for each of the solutions in any of the original equations.
You add -18... 18 + y = 32 18 + y + (-18) = 32 + (-18) y = 14
5.
u = p r t r = u / p t
p v = n r t v = n r t / p
Since there is no indicated variable, I am at a complete loss as to what the link at scribd.com will solve!
Rearrange the formula so that the indicated variable is the subject of the mathematical formula.
Algebraically manipulate the equation until you have the indicated variable on one side of the equation and all of the other factors on the other side.
The answer will depend on the exact form of the formula.
c equals b over 8
t=-4
It depends on which variable you wish to solve for.
Give x a value of 2 and so when x = 2 then w = 4
8kt16=10k
x = 20