1. $2x^{2}+x+9a-x^{2}-7a=x^{2}+2a-10$ 2. $12z-3c+x-12z+2c=x-c+2$ 3. x+2x = 6 4. 2-x = x-8 5. $2x-1=5x+8$ 6. $3+3x-1=x+2+2x$ 7. $2\left(1+2x\right)=10$ 8. $2\left(3x-2\right)=2$ 9. $-2\left(3x-2\right)=-2$ 10, $3x+1=3+\left(2-2x\right)$ 11. $2x+2-3x+5=3+2$ 12. $2x+1-7x+1=-2x+1+7x$ 13. $3x+2-3\left(4x-1-9x\right)=6x-1$ 14. $4\left(x-10\right)=-6\left(2-x\right)$ 15. $2\left(x+1\right)-3\left(x-2\right)=x+6$ 16. $5-2\left(1-x\right)=2x-3$ $x-3=\dfrac {x-2} {4}$ 17. - $1+\dfrac {4x-6} {2}=-2$ 18. – $\left(\dfrac {4x-4} {3}\right)+5=10$ 19. $2x-4=5+\dfrac {x+3} {3}$ 20.

Desarrolla $\left(0$ left $\left(-2x-3y$ \ $1gnt\right)$ $21\right)\left(-2x-3y^{2}\right)$

Ecuaciones lineales con una incógnita. $1\right).-2-x=x-8$ $2\right).-3+3x-1=x+2+2x$ $3\right).-2\left(3x-2\right)=2$ $4\right).-5-2\left(1-x\right)=2x-3$ $5\right).-x-3=3-x$