Solve for f_1
f_{1} = \frac{67}{2} = 33\frac{1}{2} = 33.5
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2990=2600+\left(\frac{229}{2}-\left(12+30+f_{1}\right)\right)\times 10
Multiply both sides of the equation by 65.
2990=2600+\left(\frac{229}{2}-\left(42+f_{1}\right)\right)\times 10
Add 12 and 30 to get 42.
2990=2600+\left(\frac{229}{2}-42-f_{1}\right)\times 10
To find the opposite of 42+f_{1}, find the opposite of each term.
2990=2600+\left(\frac{229}{2}-\frac{84}{2}-f_{1}\right)\times 10
Convert 42 to fraction \frac{84}{2}.
2990=2600+\left(\frac{229-84}{2}-f_{1}\right)\times 10
Since \frac{229}{2} and \frac{84}{2} have the same denominator, subtract them by subtracting their numerators.
2990=2600+\left(\frac{145}{2}-f_{1}\right)\times 10
Subtract 84 from 229 to get 145.
2990=2600+\frac{145}{2}\times 10-10f_{1}
Use the distributive property to multiply \frac{145}{2}-f_{1} by 10.
2990=2600+\frac{145\times 10}{2}-10f_{1}
Express \frac{145}{2}\times 10 as a single fraction.
2990=2600+\frac{1450}{2}-10f_{1}
Multiply 145 and 10 to get 1450.
2990=2600+725-10f_{1}
Divide 1450 by 2 to get 725.
2990=3325-10f_{1}
Add 2600 and 725 to get 3325.
3325-10f_{1}=2990
Swap sides so that all variable terms are on the left hand side.
-10f_{1}=2990-3325
Subtract 3325 from both sides.
-10f_{1}=-335
Subtract 3325 from 2990 to get -335.
f_{1}=\frac{-335}{-10}
Divide both sides by -10.
f_{1}=\frac{67}{2}
Reduce the fraction \frac{-335}{-10} to lowest terms by extracting and canceling out -5.
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
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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}