Question

An angle is 20degree more than thrice its supplement angle. find the angles.​

Answer 1

Step-by-step explanation:

$20 + 3(180 - x) = x \\ 20 + 540 - 3x = x \\ 560 = 4x \\ 4x = 560 \\ x = 560 \div 4 \\ x = 140 \\ \\ \\ hence \: \: the \: angles \: are \: 140 \: and \: 40$