A lot of students seem to find it difficult to solve equations. The act of solving equations is all about doing the same thing to both sides of the equation and making sure you end up with the letters on one side and the numbers on the other side of the equation.
For Example:
Find the value of y in these equations:
y + 3 = 10
Subtract 3 from both sides
y = 7
y – 3 = 10
Add 3 to both sides
y = 13
3) 4y + 5 = 21
Subtract 5 from both sides
4y = 16
Divide both sides by 4
y = 4
In the first equation we subtracted 3 because it was + 3. So the general rule is to use the inverse operation.
Solving Linear Equations
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