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6\left(6x+4\right)-15\times 9\left(x-3\right)=10\left(5x+4\right)
Multiply both sides of the equation by 30, the least common multiple of 5,2,3.
36x+24-15\times 9\left(x-3\right)=10\left(5x+4\right)
Use the distributive property to multiply 6 by 6x+4.
36x+24-135\left(x-3\right)=10\left(5x+4\right)
Multiply -15 and 9 to get -135.
36x+24-135x+405=10\left(5x+4\right)
Use the distributive property to multiply -135 by x-3.
-99x+24+405=10\left(5x+4\right)
Combine 36x and -135x to get -99x.
-99x+429=10\left(5x+4\right)
Add 24 and 405 to get 429.
-99x+429=50x+40
Use the distributive property to multiply 10 by 5x+4.
-99x+429-50x=40
Subtract 50x from both sides.
-149x+429=40
Combine -99x and -50x to get -149x.
-149x=40-429
Subtract 429 from both sides.
-149x=-389
Subtract 429 from 40 to get -389.
x=\frac{-389}{-149}
Divide both sides by -149.
x=\frac{389}{149}
Fraction \frac{-389}{-149} can be simplified to \frac{389}{149} by removing the negative sign from both the numerator and the denominator.