Question 670339
Two angles are supplementary if they add up to 180 degrees.

let the angles be x and y

so x + y = 180

let x be the larger angle and y the smaller angle

y = 70 + 4x

substitute this into x + y = 180

x + 70 + 4x = 180

5x + 70 = 180

5x = 110

x = 22 degrees

substitute x = 22 into any of the equations, let's use x + y = 180

22 + y = 180

y = 158 degrees