Question

Solve for x solve for x ​

Answer 1

13x+2+3x-4+5x-7=180(sum of interior angle of a triangle is 180)

21x-9=180

21x=180+9

x=189÷21

x=9

Answer 2

x = 9

Explanation:

We know that, the sum of the interior angles in a triangle is added up to 180°.

13x + 2 + 3x - 4 + 5x - 7 = 180

Combine like terms.

21x - 9 = 180

Add 9 to both sides.

21x = 189

Divide both sides by 21.

x = 9