Solve for t
t = \frac{37}{3} = 12\frac{1}{3} \approx 12.333333333
Share
Copied to clipboard
7t-21=4\left(t+5\right)-4
Use the distributive property to multiply 7 by t-3.
7t-21=4t+20-4
Use the distributive property to multiply 4 by t+5.
7t-21=4t+16
Subtract 4 from 20 to get 16.
7t-21-4t=16
Subtract 4t from both sides.
3t-21=16
Combine 7t and -4t to get 3t.
3t=16+21
Add 21 to both sides.
3t=37
Add 16 and 21 to get 37.
t=\frac{37}{3}
Divide both sides by 3.
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}