The value of 
that satisfies all the expressions of the system of linear equations is 20.
<h3 /><h3>Procedure - Determination of a variable associated to a pair of corresponding angles</h3>
According to the figure, angles 1 and 5 are <em>corresponding</em> angles between two <em>parallel</em> lines, therefore we have the following equivalence:
(1)
After some algebraic handling we find the value of :
The value of that satisfies all the expressions of the system of linear equations is 20. 
<h3>Remarks</h3>
There is a missing figure for the statement, we proceed to include it below after some research.
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Answer:
7. 23
8. 18
9. 55
10. 17
Step-by-step explanation:
You'll need to isolate 9a on the left side of this equation
Please add 7 to both sides of the eqn, obtaining 9a = 117.
Solve for a by dividing both sides by 9: a = 117/9 = 13 (answer)
Answer:
x = 3
Step-by-step explanation:
if you count the right side you get 13 so now you subtract the ones on the left so like this
(13 - 4 = 9) now divide 9 with 3 and get 3
27 + <u> </u><u>x</u><u> </u> = 46
x = 46 - 27
x = 19 <u> </u><u>Ans</u><u> </u> .
