Today we will continue with SOLVING 1 step equations, but now focusing on equations that involve multiplication and division.
Students will be introduced to different signs that mean divide. Many students have not seen a fraction bar or slash used as symbol meaning to divide, but they will from now on.
Some examples include
s / 6 = 7 (this reads: "s divided by 6 equals 7") answer: s = 42
v / 5 = 9 answer: v = 45
26 = x / 3 answer: x = 78
5g = 20 answer: g = 4
3f = 21 answer: f = 7
Steps to Solving equations
1.) Isolate the variable (get it by itself) by performing the inverse (opposite) operation
2.) Whatever we do to 1 side of the equation, we must do to the other
3.) Check by substituting your answer into the original equation
Example:
5x = 45
Isolate the variable by dividing both sides of the equation by 5
this leaves us with...
x = 9
Now substitute 9 into the original equation
5 (9) = 45 this is a balanced equation so we know x = 9 is correct!
Students will have homework tonight for solving equations. I will be taking a grade on this homework so make sure it is done and brought back in their binder!
There is a quiz over evaluating expressions and solving equations on Friday
