Use the arithmetic operations to get the variable x on one side of the equation and everything else on the opposite side.
If something is being is being done to a variable, we undo that operation by using the inverse of that operation.
For example, if 10 is being added to x, we use the inverse of addition or subtraction.
18 - 7x = -20.5
We variable x is being multiplied by 7 and is subtracting 18. We need to undo all those operations.
18 - 7x = -20.5
-7x = -38.5
Now the variable is only being multiplied by -7. Reverse the operation.
-7x = -38.5
x = 5.5
So, x is equal to 5.5.
Answer:
8. 12 in
9. 30 ft
10. 87.92 in
Step-by-step explanation:
Answer:
hmmm
Step-by-step explanation:
F(x) = 5x
for f(7) you replace x with 7 so it will be : f(7) = 5(7) = 35
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