Solve for x
x<-\frac{23}{8}
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2\left(x+1\right)-5\left(2x-1\right)>30
Multiply both sides of the equation by 10, the least common multiple of 5,2. Since 10 is positive, the inequality direction remains the same.
2x+2-5\left(2x-1\right)>30
Use the distributive property to multiply 2 by x+1.
2x+2-10x+5>30
Use the distributive property to multiply -5 by 2x-1.
-8x+2+5>30
Combine 2x and -10x to get -8x.
-8x+7>30
Add 2 and 5 to get 7.
-8x>30-7
Subtract 7 from both sides.
-8x>23
Subtract 7 from 30 to get 23.
x<-\frac{23}{8}
Divide both sides by -8. Since -8 is negative, the inequality direction is changed.
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
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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}