Question

DOY CORONITA

1) 3x –12 = x + 2

2) 4x –17 = -6x - 82

3) 6y +3 = 3y + 9

4) -3x+2 = 9x -3

5) 5n -5= 2n +1

Answer 1

ΗΘΙΑ

procedimiento :

1)

3x−12=x+2

[tex]3x-12-x=x+2-x[/tex]

[tex]2x-12=2[/tex]

[tex]2x-12+12=2+12[/tex]

[tex]2x=14[/tex]

[tex]2x/2=14/2[/tex]

[tex]$$\boxed{x=1}$$[/tex]

2)

4x –17 = -6x - 82

[tex]4x-17+6x=-6x-82+6x[/tex]

[tex]10x-17=-82[/tex]

[tex]10x-17+17=-82+17[/tex]

[tex]10x=-65[/tex]

[tex]\frac{10x}{10} \frac{-65}{10}[/tex]

[tex]$$\boxed{x=\frac{-13}{2} }$$[/tex]

3)

6y +3 = 3y + 9

[tex]6y+3-3y=3y+9-3y[/tex]

[tex]3y+3=9[/tex]

[tex]3y+3-3=9-3[/tex]

[tex]3y=6[/tex]

[tex]\frac{3y}{3}= \frac{6}{3}[/tex]

[tex]$$\boxed{y=2}$$[/tex]

4)

-3x+2 = 9x -3

[tex]-3x+2-9x=9x-3-9x[/tex]

[tex]-12x+2=-3[/tex]

[tex]-12x+2-2=-3-2[/tex]

[tex]-12x=-5[/tex]

[tex]\frac{-12x}{-12} \frac{-5}{-12}[/tex]

[tex]$$\boxed{x=\frac{5}{2} }$$[/tex]

5)

5n -5= 2n +1

[tex]5n-5-2n=2n+1-2n[/tex]

[tex]3n-5=1[/tex]

[tex]3n-5+5=1+5[/tex]

[tex]3n=6[/tex]

[tex]\frac{3n}{3}= \frac{6}{3}[/tex]

[tex]$$\boxed{n=2}$$[/tex]

salu2!!