Question

(x-20°) (x- 30) (x+ 10°)=
180°​

Answer 1

Answer:

x-30+x-20=180

We simplify the equation to the form, which is simple to understand

x-30+x-20=180

We move all terms containing x to the left and all other terms to the right.

+1x+1x=+180+30+20

We simplify left and right side of the equation.

+2x=+230

We divide both sides of the equation by 2 to get x.

x=115

Answer 2

ANSWER

$(x - 20 ) + (x - 30) + (x + 10) = 180 \\ 3x + 60 = 180 \\ 3x = 180 - 60 \\ 3x = 120 \\ x = 120 \div 3 \\ x = 40$