Answer:
Explanation:
For the first equation,
h-3=9, we need to put all the knowns (numbers) on one side and all the variables on the other side. because equations are like a scale, if we do the same thing to both sides of the equation, the equation will still be true. for this equation, if we add 3 to both sides, we will get:
h-3+3=9+3
this can be simplified to:
h=12
this is your answer.
For the second equation,
we can apply the same principle for the first equation to the second equation.
1/2 x h = 10
can also be written as:
1/2 of h = 10
we can multiply both sides by 2 to get:
1h=20
or
h=20