x-5 = 4(x+2
Solve for x
x = -\frac{13}{3} = -4\frac{1}{3} \approx -4.333333333
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x-5=4x+8
Use the distributive property to multiply 4 by x+2.
x-5-4x=8
Subtract 4x from both sides.
-3x-5=8
Combine x and -4x to get -3x.
-3x=8+5
Add 5 to both sides.
-3x=13
Add 8 and 5 to get 13.
x=\frac{13}{-3}
Divide both sides by -3.
x=-\frac{13}{3}
Fraction \frac{13}{-3} can be rewritten as -\frac{13}{3} by extracting the negative sign.
Examples
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y = 3x + 4
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Simultaneous equation
\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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