Question

For what value of x will the lines I and m be parallel​

Answer 1

Step-by-step explanation:

For the lines to be parallel both the angles must be equal

so 7x-20=3x+20 ->4x=40°

x= 10°

Answer 2

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Both the lines are parallel. It means, (3x - 5)° = 4x°........... Corresponding Angles Property. Thus, if the value of x is -5, then 'm' and 'l' will be parallel to each other