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2x₊6-10=38
2x-4=38
2x=38₊4
2x=42
x=42/2
x=21
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-x₊3x=-x₊20
2x=-x₊20
3x=20
x=20/3
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5x-3(x₊5)=20
5x-3x-15=20
2x=20₊15
2x=35
x=35/2