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5\left(2x-1\right)=15x-3\left(-x-1\right)
Multiply both sides of the equation by 15, the least common multiple of 3,5.
10x-5=15x-3\left(-x-1\right)
Use the distributive property to multiply 5 by 2x-1.
10x-5=15x-3\left(-x\right)+3
Use the distributive property to multiply -3 by -x-1.
10x-5=15x+3x+3
Multiply -3 and -1 to get 3.
10x-5=18x+3
Combine 15x and 3x to get 18x.
10x-5-18x=3
Subtract 18x from both sides.
-8x-5=3
Combine 10x and -18x to get -8x.
-8x=3+5
Add 5 to both sides.
-8x=8
Add 3 and 5 to get 8.
x=\frac{8}{-8}
Divide both sides by -8.
x=-1
Divide 8 by -8 to get -1.