SOLUTION: Find x if the four angles of a quadrilateral are (5x-15),(3x-1)(5x-15) and (4x+34).

Question 1015731: Find x if the four angles of a quadrilateral are (5x-15),(3x-1)(5x-15) and (4x+34).
Found 2 solutions by LinnW, fractalier:
Answer by LinnW(1048) (Show Source): You can put this solution on YOUR website!
A angles of quadrilateral = 180 degrees
so (5x-15)+(3x-1)+(5x-15)+(4x+34)= 180
5x+3x+5x+4x-15-1-15+34 = 180
17x+3 = 180
add -3 to each side
17x = 177
divide each side by 17
x = 177/17

Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Since the angles of every quadrilateral add up to 360, we have
(5x-15)+(3x-1)+(5x-15)+(4x+34)=360
17x + 3 = 360
17x = 357
x = 21
RELATED QUESTIONS
Four angles of a quadrilateral are (6x � 30)0, (5x + 70) 0, (4x) 0 and (3x � 30) 0. Find... (answered by Boreal)
The angles of a quadrilateral,taken are x, 5x,4x and 2x. Find these angles. Draw a rough... (answered by Solver92311)
The angles of a quadrilateral,taken in order, are x,5x,4x and 2x. Find these... (answered by Fombitz)
The angles of quadrilateral, taken in order are x,5x,4x,and 2x.Find these angles. Draw a... (answered by Alan3354)
The angles of a quadrilateral, taken in ordet are x, 5x, 4x and 2x. Find these angles.... (answered by josgarithmetic)
Two angles of a quadrilateral are 45� and 85�. The other two angles are in the ratio 15 : (answered by fractalier)
∠A and ∠B are vertical angles. If m∠A=(2x+15)∘ and... (answered by Boreal,ikleyn,Alan3354)
The angle of a quadrilateral are taken in the order 2a,3a,6a,and 7a find'a'and calculate... (answered by greenestamps)
Find the largest value of x such that 3x^2 + 17x + 15 = 2x^2 + 21x + 12 - 5x^2 + 17x +... (answered by ikleyn)