Solve for x
x=-4.8
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3x+5-0.5x=-7
Subtract 0.5x from both sides.
2.5x+5=-7
Combine 3x and -0.5x to get 2.5x.
2.5x=-7-5
Subtract 5 from both sides.
2.5x=-12
Subtract 5 from -7 to get -12.
x=\frac{-12}{2.5}
Divide both sides by 2.5.
x=\frac{-120}{25}
Expand \frac{-12}{2.5} by multiplying both numerator and the denominator by 10.
x=-\frac{24}{5}
Reduce the fraction \frac{-120}{25} to lowest terms by extracting and canceling out 5.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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