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\left(x-3\right)\left(x+4\right)+\left(-2+x\right)\left(x+1\right)=\left(-2+x\right)\left(2x+5\right)
Variable x cannot be equal to any of the values \frac{1}{2},2,3 since division by zero is not defined. Multiply both sides of the equation by 2\left(x-3\right)\left(\frac{1}{2}x-1\right)\left(2x-1\right), the least common multiple of 2x^{2}-5x+2,2x^{2}-7x+3.
x^{2}+x-12+\left(-2+x\right)\left(x+1\right)=\left(-2+x\right)\left(2x+5\right)
Use the distributive property to multiply x-3 by x+4 and combine like terms.
x^{2}+x-12-x-2+x^{2}=\left(-2+x\right)\left(2x+5\right)
Use the distributive property to multiply -2+x by x+1 and combine like terms.
x^{2}-12-2+x^{2}=\left(-2+x\right)\left(2x+5\right)
Combine x and -x to get 0.
x^{2}-14+x^{2}=\left(-2+x\right)\left(2x+5\right)
Subtract 2 from -12 to get -14.
2x^{2}-14=\left(-2+x\right)\left(2x+5\right)
Combine x^{2} and x^{2} to get 2x^{2}.
2x^{2}-14=x-10+2x^{2}
Use the distributive property to multiply -2+x by 2x+5 and combine like terms.
2x^{2}-14-x=-10+2x^{2}
Subtract x from both sides.
2x^{2}-14-x-2x^{2}=-10
Subtract 2x^{2} from both sides.
-14-x=-10
Combine 2x^{2} and -2x^{2} to get 0.
-x=-10+14
Add 14 to both sides.
-x=4
Add -10 and 14 to get 4.
x=-4
Multiply both sides by -1.