y - 7 = \frac { 10,5 - 7 } { 4,5 - 3 } ( x - 3 )
Solve for x
x=\frac{3y}{7}
Solve for y
y=\frac{7x}{3}
Graph
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y-7=\frac{3,5}{4,5-3}\left(x-3\right)
Subtract 7 from 10,5 to get 3,5.
y-7=\frac{3,5}{1,5}\left(x-3\right)
Subtract 3 from 4,5 to get 1,5.
y-7=\frac{35}{15}\left(x-3\right)
Expand \frac{3,5}{1,5} by multiplying both numerator and the denominator by 10.
y-7=\frac{7}{3}\left(x-3\right)
Reduce the fraction \frac{35}{15} to lowest terms by extracting and canceling out 5.
y-7=\frac{7}{3}x-7
Use the distributive property to multiply \frac{7}{3} by x-3.
\frac{7}{3}x-7=y-7
Swap sides so that all variable terms are on the left hand side.
\frac{7}{3}x=y-7+7
Add 7 to both sides.
\frac{7}{3}x=y
Add -7 and 7 to get 0.
\frac{\frac{7}{3}x}{\frac{7}{3}}=\frac{y}{\frac{7}{3}}
Divide both sides of the equation by \frac{7}{3}, which is the same as multiplying both sides by the reciprocal of the fraction.
x=\frac{y}{\frac{7}{3}}
Dividing by \frac{7}{3} undoes the multiplication by \frac{7}{3}.
x=\frac{3y}{7}
Divide y by \frac{7}{3} by multiplying y by the reciprocal of \frac{7}{3}.
y-7=\frac{3,5}{4,5-3}\left(x-3\right)
Subtract 7 from 10,5 to get 3,5.
y-7=\frac{3,5}{1,5}\left(x-3\right)
Subtract 3 from 4,5 to get 1,5.
y-7=\frac{35}{15}\left(x-3\right)
Expand \frac{3,5}{1,5} by multiplying both numerator and the denominator by 10.
y-7=\frac{7}{3}\left(x-3\right)
Reduce the fraction \frac{35}{15} to lowest terms by extracting and canceling out 5.
y-7=\frac{7}{3}x-7
Use the distributive property to multiply \frac{7}{3} by x-3.
y=\frac{7}{3}x-7+7
Add 7 to both sides.
y=\frac{7}{3}x
Add -7 and 7 to get 0.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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]
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}