Solve for a
a=-4
Share
Copied to clipboard
4a+5-3.25a=2
Subtract 3.25a from both sides.
0.75a+5=2
Combine 4a and -3.25a to get 0.75a.
0.75a=2-5
Subtract 5 from both sides.
0.75a=-3
Subtract 5 from 2 to get -3.
a=\frac{-3}{0.75}
Divide both sides by 0.75.
a=\frac{-300}{75}
Expand \frac{-3}{0.75} by multiplying both numerator and the denominator by 100.
a=-4
Divide -300 by 75 to get -4.
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}