Question

PLEASE HELP ME IF U DO THANKS

Answer 1

(2x+10)+30+40=180
2x+10+30+50=180
2x+90=180
2x=90
x=45

Hope this helps

Answer 2

x = 45

Explanation:

the 3 angles in a triangle sum to 180°

sum the 3 angles and equate to 180

2x + 10 + 50 + 30 = 180

2x + 90 = 180 ( subtract 90 from both sides )

2x = 90 ( divide both sides by 2 )

x = 45