Okay so for the first one it is three ways
1) graphing 2) substitution method 3) elimination method
For the second question it is
If
the equation contains any fractions use the least common denominator to
clear the fractions. We will do this
by multiplying both sides of the equation by the LCD.
Also, if there are variables in the denominators of the fractions
identify values of the variable which will give division by zero as we
will need to avoid these values in our solution.
Simplify
both sides of the equation. This
means clearing out any parenthesis, and combining like terms.
Use
the first two facts above to get all terms with the variable in them on
one side of the equations (combining into a single term of course) and
all constants on the other side.
If
the coefficient of the variable is not a one use the third or fourth
fact above (this will depend on just what the number is) to make the
coefficient a one.
