You have to get a variable by itself like in here... Y is itself so in the other equation or we can say second one you just have to sub it in... Like
2x+5(-3x-2)=16
2x-15x-10=16
Now you just have to subtract 2 from 15, because of the same variable that is (x)
So -13x-10=16
Take 10 to the other side means add from the both sides, that will get you at
-13x=26
So now x= -2
Remember you added because it was -10 if it would be a positive 10 then you have to subtract it from both of the sides but since here it was negative so you just added them up
Hope i helped
Answer:
Total Resistance = 
Ω (or 144.44 Ω)
Step-by-step explanation:
If two resistors, with resistance x and y, are connected in parallel, their total resistance is given by the formula:
If 2 resistors with resistance x and y and connected in series, their total resistance would be:
Total = x + y
<em>Now, the first part, 100 and 80 are in parallel, so according to formula it would be:</em>
<em>
</em>
<em />
<em>Now, this is connected in series with 100, so the grand total would be:</em>
<em>Total Resistance of Circuit = 
</em>
<em />
This is the total resistance of the circuit.
Given parameters:
Dimension of the room = 6 inches by 11 inches;
Unknown:
Area of the actual room = ?
Solution:
The area of the room = length x breadth
Now, we need to convert inches to feet;
Scale;
1 inch = 1 foot
6 inches = 6 foot
1 inch = 1 foot
11 inch = 11 foot
The area of the room = 6 x 11 = 66 square feet
6:16
We can divide 2 to both numbers.
6 / 2 = 3
16 / 2 = 8
3/8
5/9
Multiply 2 to the numerator and denominator:
2 * 5 = 10
2 * 9 = 18
10/18
Do it again:
2 * 10 = 20
2 * 18 = 36
20/36
