Hey there!
The main concept of pre-algebra is solving equations for variables in them.
For example, let's say you have the algebraic equation below.
x+1=3
With algebra, you need to figure what x is equal to. To do so, you will use inverse operations on both sides of the equation to isolate x one side, showing what it is equal to.
We would subtract 1 to both sides to isolate x on one side.
x+1-1=3-1
As you can see, +1-1=0, therefore, this would give us x+0, or just x. Now it is isolated and will show us what it is equal to.
x=3-1
x=2
Therefore, in our equation x+1=3, x would be equal to 2.
I hope this explanation helps! Have a great time here at Brainly!
Answer:
2x+y=
1 beacuse ...... i had the same question
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let x = unknown number
Multiply both sides by 9:
Expand brackets:
Add 32 to both sides:
Divide both sides by 8:
you would have to do 170/20 which equals 8.5 multiply that by 8
so his daily does would be 510 milligrams
Answer:
true, both sides are divisible by 5
Step-by-step explanation:
5x=-20
÷5 ÷5
x= -4
