x + 2x + 3x – 5 = 4x – 9

(a)  

$$5x-30+35-10x=45x-20+65-10x$$  

(a)  

$$2(x-5)-3(1-x)=17$$  

(a)  

$$(3-x)+2(x-1)=(x-5)+2x$$  

(a)  

Resuelve la siguiente ecuación:
$$3x+5\left(x-1\right)=2x+7$$  

(a)  

2(2x+3)-2x-7 = x-3

(a)  

8(x-2) - 3(x-1) = 4(x+3)

(a)  

1-3x+9x+2 = 2(x+2)

(a)  

$$x-9-2\cdot\left(x+3\right)=-12$$

(a)