Solve for w
w=-1
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8w-4+12=0
Combine 7w and w to get 8w.
8w+8=0
Add -4 and 12 to get 8.
8w=-8
Subtract 8 from both sides. Anything subtracted from zero gives its negation.
w=\frac{-8}{8}
Divide both sides by 8.
w=-1
Divide -8 by 8 to get -1.
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\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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