80
Subtract 2x from each side: 30 = 10x - 50;Add 50 to each side: 80 = 10xDivide each side by 10: 8 = x
2
50
0.02
Set up a proportion. 50/80 = x/100 Multiply both sides by 100 x = 62.5%
80
x+30 = 3x-50 x-3x = -50-30 -2x = -80 x = 40
80 x 50 = 4,000
If you meant x to be the third interior angle, x would equal 80, because the sum of all three interior angles of a triangle equals 180. So 80+50+50=180
-40
0.05 x 80 = 4
100 x 50 x 80 = 400,000
x2 = -80 x = (+/-)(-80).5 = (+/-)4isqrt(5)
x=5
Subtract 2x from each side: 30 = 10x - 50;Add 50 to each side: 80 = 10xDivide each side by 10: 8 = x
50/80 x 100 = 62.5 Therefore, 50 is 62.5 percent of 80.