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Pre-Algebra
Mean
Mode
Greatest Common Factor
Least Common Multiple
Order of Operations
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Mixed Fractions
Prime Factorization
Exponents
Radicals
Algebra
Combine Like Terms
Solve for a Variable
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Expand
Evaluate Fractions
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Solve for x
x=6
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Steps for Solving Linear Equation
3x=18
Divide both sides by 3.
x=\frac{18}{3}
Divide 18 by 3 to get 6.
x=6
Graph
Graph Both Sides in 2D
Graph in 2D
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Linear Equation
5 problems similar to:
3x=18
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The double {-6}, from {|3x + 7| = 11}
https://math.stackexchange.com/questions/1845060/the-double-6-from-3x-7-11/1852698
{3x + 7 = 11} -(3x + 7) = 11 3x + 7 = -11 3x = -18 x = -6
The sum of three consecutive terms of an Arithmetic progression is 18 and their product is 120. Find the terms.
https://math.stackexchange.com/q/1674758
In general, the consecutive terms can differ by any number, say d, instead of just 1. So, the three numbers are better represented as x-d,x, and x+d. Then, 3x=18 \Rightarrow x=6 and x(x^2-d^2)=120 ...
General solution of C_{n+2}(x)=xC_n(x)+nC_{n-1}(x)
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Let G(z) be the exponential generating function defining G(z) = \sum_{n=0}^\infty C_n \frac{z^n}{n!}. The recurrence equation C_{n+2} = x C_n + n C_{n-1} translates into a differential equation: ...
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x=\frac{18}{3}
Divide both sides by 3.
x=6
Divide 18 by 3 to get 6.
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
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}
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