The angle sum of a triangle is 180 degrees
So add all the angles inside and equate it to 180: 5x+2x+3x= 180
10x=180
x= 18
Because you’re finding angle L, which is 3x, and we find what the numerical value of x is
Angle L = 3x18 = 54.
Hope this helps!
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What you would do is multiply for this problem.
you turn 35% into a decimal so the problem would look like
0.35 x 120 that should equal 42
hope that helps
