Answer:
78
Step-by-step explanation:
180-90-12=78
For this case, the first thing we must do is define a variable.
We have then:
x: unknown number
We now write the equation that models the problem:
From here, we clear the value of x.
We multiply both sides of the equation by 2:
We subtract 30 on both sides of the equation:
Answer:
The value of the unknown number is given by:
I don't understand, could you explain further?
Answer:
-11
Step-by-step explanation:
X=-3/5
3
- ---
5
X=-3/5 would be the answer