Find the measure of each angle in a triangle with angles: x, (x-135), and 1/10 x
we know that
x + x-135 + x/10 = 180
multiply each term by 10
10x + 10x + 1350 + x = 1800
21x = 450
x = 450/21 = 150/7
x = 150/7
x-135 = a negative ! , OOPS, something is bogus about your data, an angle inside a triangle cannot be negative.