To solve an equation, we use the rules of algebra to put the variable alone on one side. Solve the equation

Given equation 
_____________  Subtract 4 
_____________  Multiply by

So the solution is
To solve:
The given expression.
Simplest type of equation is called a linear equation or first degree equation (power of
We solve the equations by changing it to an equivalent equation with all variables on one side and all constants on the other side.
Ex:
Here
Calculation:
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