Question

Please answer this question​

Answer 1

Answer:

x=28

Explanation:

we know that the sum of 3 sides of triangle is 180°

therefore,5x+60+2x+40+3x-80=180

=5x+2x+3x-60+40-80=180

=10x-60+40-80=180

=10x-100=180

=10x=180+100

=10x=280

=x=280/10

Therefore,x=28

Answer 2

$x = \: 28$

First arrange them

$5x \: + \: 2x \: + \: 3x \: - 60 \: - 80 \: + 40 \: = \: 180$

$10x - 140 + 40=180$

$10x \: - 100=180$

$10x=180 \: + 100$

$10x =280$

$x=280 \div 10$

$x=28$