SOLUTION: a quadrilateralhas four angle...each angle has a different measurment.. i have to figure out the value of x with the information below The measurement of angle A is (4x+10)degrees

Question 126359: a quadrilateralhas four angle...each angle has a different measurment.. i have to figure out the value of x with the information below
The measurement of angle A is (4x+10)degrees
The measurement of angle B is 108 degrees
The measurement of angle C is 67 Degrees
The measurement of angle D is 3x dergrees

Help please!!!! i dont get it....thanx alot
Found 2 solutions by jim_thompson5910, checkley71:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Remember the sum of all four angles of any quadrilateral is always 360 degrees. So in other words, we have the equation:

Plug in , , and

Combine like terms on the left side

Subtract 185 from both sides

Combine like terms on the right side

Divide both sides by 7 to isolate x

Divide

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Answer:
So our answer is

Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
4x+10+108+67+3x=360 or 7x=360-10-108-67 or 7x=175 or x=175/7 or x=25
4*25+10=100+10=110 for the first angle.
3*25=75 for the last angle.
PROOF: 110+108+67+75=360 or 360=360.
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