Solve for x
x=30
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x+10=2\times 10+20
Divide 50 by 5 to get 10.
x+10=20+20
Multiply 2 and 10 to get 20.
x+10=40
Add 20 and 20 to get 40.
x=40-10
Subtract 10 from both sides.
x=30
Subtract 10 from 40 to get 30.
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