Question

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Answer 1

180 - 140 = 40 
x= 40 
z=105 

105 + 35 = 155
180 - 155 = 25
y= 25

 x + 2x + x+20 = 180
4x = 180 - 20
4x = 160
x = 40

30 + 40 = 70 
x= 70