Answer:
1. 13
2. 18
3. 7
4. 12
Step-by-step explanation:
Well, the total of angles in the triangle should equal to 180
1. (8x - 35) + (6x - 5) + (3x - 1) = 180
⇔ x = [tex]\frac{180+1+5+35}{8+6+3}[/tex]
⇔ x = 13
2. (5x - 11) + (2x + 20) + [180 - (11x - 63)] = 180
⇔ x = [tex]\frac{180+11-20-180-63}{5+2-11}[/tex]
⇔ x = 18
3. It's Equilateral Triangle.
(9x - 3) = [tex]\frac{180}{3}[/tex]
⇔ x = 7
4. It's Isosceles triangle.
(8x - 23) = [tex]\frac{180 - 34}{2}[/tex]
⇔x = [tex]\frac{73+23}{8}[/tex]
⇔x = 12
