Question

The angles of a triangle are x-35 and x-20 and x+40 find x

Answer 1

x-35+×-20+×+40=180

3×-15=180

3×=180-15

3×=165

×=165/3

x=55

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Answer 2

Step-by-step explanation:

we know that the sum of triangle is equal to 180°

let, A=x-35 B=x-20 C=x+40

x-35+x-20+x+40 =180°

3x-55+40 =180°

3x-15=180°

3x=180°+15

x=195/3

x= 65

A= x-35 = 65-35=30°

B= x-20 = 65-20=45

C= x+40= 65+40=105°

verify:

30°+45°+105°=180°