Solve for b
b=2
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\frac{10}{4}=\frac{3+b}{2}
Divide both sides by 4.
\frac{5}{2}=\frac{3+b}{2}
Reduce the fraction \frac{10}{4} to lowest terms by extracting and canceling out 2.
\frac{5}{2}\times 2=3+b
Multiply both sides by 2.
5=3+b
Cancel out 2 and 2.
3+b=5
Swap sides so that all variable terms are on the left hand side.
b=5-3
Subtract 3 from both sides.
b=2
Subtract 3 from 5 to get 2.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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Matrix
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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
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Limits
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