pls solve all question steps wise
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a)
2x+40 = 180
x=70
b) 3x+x = 180
x=45
c) 3x-2=x+20
2x=22
x=11
2x+40 = 180
x=70
b) 3x+x = 180
x=45
c) 3x-2=x+20
2x=22
x=11
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