how to find the value of x
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so,sum of all sides
x+3+x+20+x+7=180
3x+30=180
3x=180-30
3x=150
x=150/3
x=50
accordingly by putting x is equal to 50will find out the answers
of X + 3 X + 20 and X + 7
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so, =(x+3)+(x+20)+(x+7)=180
=3x+30=180
=3x=180-30
=3x=150
=x=150/3
x= 50
Hope this helps you
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