Write an equation. Since you are writing an equation that describes the amount of money they will give to the shelter, the variable will be alone on one side of the equation. Since you are combining their profits and tips, you will be adding two terms. So, x = __ + __. The first term will be equal to their profits. You can use this formula to solve quadratic equations. Or, if your equation factored, then you can use the quadratic formula to test if your solutions of the quadratic equation are correct. What is the quadratic formula. The expression b 2 − 4 a c {b}^{2}-4ac b 2 − 4 a c, which is under the √ (sqrt) inside the quadratic formula is called
Solve linear equations using a general strategy. Step 1. Simplify each side of the equation as much as possible. Use the Distributive Property to remove any parentheses. Combine like terms. Step 2. Collect all the variable terms on one side of the equation. Use the Addition or Subtraction Property of Equality. Step 3.
This is how the solution of the equation 2 x 2 − 12 x + 18 = 0 goes: 2 x 2 − 12 x + 18 = 0 x 2 − 6 x + 9 = 0 Divide by 2. ( x − 3) 2 = 0 Factor. ↓ x − 3 = 0 x = 3. All terms originally had a common factor of 2 , so we divided all sides by 2 —the zero side remained zero—which made the factorization easier.
Graph your math problems. Instantly graph any equation to visualize your function and understand the relationship between variables.

When an equation such as -9 - (9x - 6) = 3(4x + 6) has parentheses, we can distribute without changing the value of each side. Then combine like terms. Next, we move all the x-terms to one side and the constants to the other. Finally, we solve for x. Created by Sal Khan and Monterey Institute for Technology and Education.

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can you solve an equation