Question

1)3x+7x+10°=180°2)2x+30°+5x+10°=180°

Answer 1

1.3x+7x=180-10
10x=170
x=170:10
x=17
2.2x+5x=180-10-30
7x=140
x=140:7
x=20

Answer 2

Let's solve the equations one by one:

1. 3x + 7x + 10° = 180°

Combining like terms:

10x + 10° = 180°

Subtracting 10° from both sides:

10x = 180° - 10°

10x = 170°

Dividing both sides by 10:

x = 170° / 10

x = 17°

Therefore, the solution for the equation is x = 17°.

2. 2x + 30° + 5x + 10° = 180°

Combining like terms:

7x + 40° = 180°

Subtracting 40° from both sides:

7x = 180° - 40°

7x = 140°

Dividing both sides by 7:

x = 140° / 7

x = 20°

Therefore, the solution for the equation is x = 20°.