Answer:
-3
Step-by-step explanation:
this is x equals to -3
we can divide the 4 to other side
There are 3 terms : 7x , 4y, and 1.
a term is separated by any math symbol
examples are =, +, *
Answer:70 degrees and 150 degrees
Step-by-step explanation: The angles of a quadrilateral add up to 360. So the sum of the two angles is 360 - (55+ 85) = 220.
After that you can model the sum of the angles with an equation:
7x + 15x = 220
22x = 220
x = 10
then you plug in x for each angle 7(10) = 70 and 15(10) = 150
