A linear equation is an algebraic equation in which the variable(s) are multiplied by numbers or added to numbers, with nothing more complicated than that.
A solution to an equation is a number that can be plugged in for the variable to make a true number statement.
Some linear equations can be solved with a single operation. For this type of equation, use the inverse operation to solve. Inverse operations "undo" each other. The easiest type involves only an addition or a subtraction.
p + 4.5 = 9.3
The inverse operation of addition is subtraction. So, subtract –4.5 from both sides.
p + 4.5 – 4.5 = 9.3 – 4.5
p = 4.8
The inverse operation of multiplication is division. So, divide both sides by 6.3.
y = 1.3
To isolate the variable a (to get a coefficient of 1), multiply both sides by 3.5.