Skip to main content
Solve for x
Tick mark Image
Graph

Similar Problems from Web Search

Share

75\left(\frac{2x}{3}-\frac{3x}{5}\right)+15=30x-30\left(x-1\right)
Multiply both sides of the equation by 15, the least common multiple of 3,5.
75\left(\frac{5\times 2x}{15}-\frac{3\times 3x}{15}\right)+15=30x-30\left(x-1\right)
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 3 and 5 is 15. Multiply \frac{2x}{3} times \frac{5}{5}. Multiply \frac{3x}{5} times \frac{3}{3}.
75\times \frac{5\times 2x-3\times 3x}{15}+15=30x-30\left(x-1\right)
Since \frac{5\times 2x}{15} and \frac{3\times 3x}{15} have the same denominator, subtract them by subtracting their numerators.
75\times \frac{10x-9x}{15}+15=30x-30\left(x-1\right)
Do the multiplications in 5\times 2x-3\times 3x.
75\times \frac{x}{15}+15=30x-30\left(x-1\right)
Combine like terms in 10x-9x.
5x+15=30x-30\left(x-1\right)
Cancel out 15, the greatest common factor in 75 and 15.
5x+15=30x-30x+30
Use the distributive property to multiply -30 by x-1.
5x+15=30
Combine 30x and -30x to get 0.
5x=30-15
Subtract 15 from both sides.
5x=15
Subtract 15 from 30 to get 15.
x=\frac{15}{5}
Divide both sides by 5.
x=3
Divide 15 by 5 to get 3.