c = 5+ 3*h
That word "equals" in there makes it an equation.
For the equation 80% of what number equals 40, the unknown number is 50.
Number density.
The property is: If equals are subtracted from equals, the results are equal.
9
In this case, the equation is balanced.
In this case, the equation is balanced.
A "balanced" equation.
3x+2 = 8
Start with the equation:x = 11 Then, to make the equation more complicated ("multi-step"), you can do different manipulations, always on both sides of the equation; for example: * Add some number to both sides * Multiply both sides by the same number * Square both sides, or apply some other function to both sides (note: this may introduce additional solutions, depending on the properties of the function applied)
4
An equation never equals a number, but its solution often does.-- An equation with a solution of six: [ 3x - 14 = 4 ]-- An equation with a solution of three: [ 14 - 10x = -16 ]-- An equation with both solutions: [ x2 - 9x + 20 = 2 ]An equation that equals 6 is 10 - 4 = 6An equation that equals 3 is 10 - 7 = 3