The sum of 3 fifteens and 4 twos will be 45 +8 = 53
The two planes intersect in a single line shared by the planes. The line of intersection is NO.
The answer to your question is x = 8
First we will do -3 times everything in the parenthesis.
-3 times -4n = 12n
-3 times 30 = -90
SO,
12n - 90 = -30
+90 +90
12n = 60
divide 12 on both sides;
n = 5
This is your answer,
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Sorry i need a table full i cant see
