\frac { 5 } { 4 } x + 5,25 = 8 - 7,25 x
Solve for x
x=\frac{11}{34}\approx 0,323529412
Graph
Share
Copied to clipboard
\frac{5}{4}x+5,25+7,25x=8
Add 7,25x to both sides.
\frac{17}{2}x+5,25=8
Combine \frac{5}{4}x and 7,25x to get \frac{17}{2}x.
\frac{17}{2}x=8-5,25
Subtract 5,25 from both sides.
\frac{17}{2}x=2,75
Subtract 5,25 from 8 to get 2,75.
x=2,75\times \frac{2}{17}
Multiply both sides by \frac{2}{17}, the reciprocal of \frac{17}{2}.
x=\frac{11}{4}\times \frac{2}{17}
Convert decimal number 2,75 to fraction \frac{275}{100}. Reduce the fraction \frac{275}{100} to lowest terms by extracting and canceling out 25.
x=\frac{11\times 2}{4\times 17}
Multiply \frac{11}{4} times \frac{2}{17} by multiplying numerator times numerator and denominator times denominator.
x=\frac{22}{68}
Do the multiplications in the fraction \frac{11\times 2}{4\times 17}.
x=\frac{11}{34}
Reduce the fraction \frac{22}{68} to lowest terms by extracting and canceling out 2.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
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}