Solve for z
z=-20
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z+7=-13
Swap sides so that all variable terms are on the left hand side.
z=-13-7
Subtract 7 from both sides.
z=-20
Subtract 7 from -13 to get -20.
Examples
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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