Solve for x
x\in \mathrm{R}
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3\times 1\left(4x+5\right)\geq 6x+2\left(3x-1\right)
Multiply both sides of the equation by 6, the least common multiple of 2,3. Since 6 is positive, the inequality direction remains the same.
3\left(4x+5\right)\geq 6x+2\left(3x-1\right)
Multiply 3 and 1 to get 3.
12x+15\geq 6x+2\left(3x-1\right)
Use the distributive property to multiply 3 by 4x+5.
12x+15\geq 6x+6x-2
Use the distributive property to multiply 2 by 3x-1.
12x+15\geq 12x-2
Combine 6x and 6x to get 12x.
12x+15-12x\geq -2
Subtract 12x from both sides.
15\geq -2
Combine 12x and -12x to get 0.
x\in \mathrm{R}
This is true for any x.
Examples
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{ 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}