Question

The Angles of a triangle are 3x°, (2x-7)°and (4x-10)° , then the value of x is
a) 10°
b) 20°
c)22°
d)30°

Answer 1

Answer:

group like terms

4x-3x-2x +(-7-10)

0+17

and.17

Answer 2

Answer:

the answer is c) 22

Step-by-step explanation:

$3x + 2x - 7 + 4x - 10 = 180 \: \: \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \ ...sum \: of \: triangle \\ 3x + 4x + 2x - 7 - 10 = 180 \\ 9x - 17 = 180 \\ 9x = 180 + 17 \\ 9x = 197 \\ x = \frac{197}{9} \\ x = 21.8 \\ x = 22$