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2x+x=36
3x=36
x=12
b) x/2 - 6=0,25
x/2=6,25
x=12,5
c) 3x/7 - 2=3
3x/7=5
3x=35
x=35/3=11 2/3
0.50x=18 |:0.50
x=36
b) x/2 - 6=0,25
x/2=6,25
x=12,5
c) 3x/7 - 2=3
3x/7=5
3x=35
x=35/3=11 2/3