Solve for x
x=-5
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5.3-1.8+1.2x=0.5x
Use the distributive property to multiply -6 by 0.3-0.2x.
3.5+1.2x=0.5x
Subtract 1.8 from 5.3 to get 3.5.
3.5+1.2x-0.5x=0
Subtract 0.5x from both sides.
3.5+0.7x=0
Combine 1.2x and -0.5x to get 0.7x.
0.7x=-3.5
Subtract 3.5 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-3.5}{0.7}
Divide both sides by 0.7.
x=\frac{-35}{7}
Expand \frac{-3.5}{0.7} by multiplying both numerator and the denominator by 10.
x=-5
Divide -35 by 7 to get -5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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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
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