Question

bro please tell me the ans
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Answer 1

Answer:

7x= 42 , 11x=66

Step-by-step explanation:

7x+11x+72=180

18x=180-72

18x=108

x=108/18

x=6

Answer 2

$first \: angle \: = 7x \\ second \: angle = 11x$

As we know that sum of all angles of a triangle is 180°

so

$7x + 11x + 72degree = 180degree$

$18x + 72degree = 180degree$

$18x = 180 - 72degree$

$18x = 108degree$

$x = \frac{108}{18}$

$x = 6$

therefore

$first \: angle = 7 \times 6 = 42 \\ second \: angle = 11 \times 6 = 66$

verification

$72 + 42 + 66 = 180$

hence verified