Solve for b
b=-\left(x+1\right)
Solve for x
x=-\left(b+1\right)
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b=x-1-2x
Subtract 2x from both sides.
b=-x-1
Combine x and -2x to get -x.
2x+b-x=-1
Subtract x from both sides.
x+b=-1
Combine 2x and -x to get x.
x=-1-b
Subtract b from both sides.
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Simultaneous equation
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Limits
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