Solve for x
x = \frac{53}{10} = 5\frac{3}{10} = 5.3
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6\left(x+5\right)+3\left(3-2x\right)=12x-2\left(7+x\right)
Multiply both sides of the equation by 12, the least common multiple of 2,4,6.
6x+30+3\left(3-2x\right)=12x-2\left(7+x\right)
Use the distributive property to multiply 6 by x+5.
6x+30+9-6x=12x-2\left(7+x\right)
Use the distributive property to multiply 3 by 3-2x.
6x+39-6x=12x-2\left(7+x\right)
Add 30 and 9 to get 39.
39=12x-2\left(7+x\right)
Combine 6x and -6x to get 0.
39=12x-14-2x
Use the distributive property to multiply -2 by 7+x.
39=10x-14
Combine 12x and -2x to get 10x.
10x-14=39
Swap sides so that all variable terms are on the left hand side.
10x=39+14
Add 14 to both sides.
10x=53
Add 39 and 14 to get 53.
x=\frac{53}{10}
Divide both sides by 10.
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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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