Question

2x+5=9
3x+7=2x-4
5x-9=3x+4
5x-1=7x-4
8x=4x-8
4x15=12+3x
-12x=-36​

Answer 1

Respuesta:

a. 2

b. -11

c. 6.5

d. 1.5

e. -2

f. -3

g. 3

Explicación paso a paso:

a. 2x +5 = 9

2x = 9 -5

2x = 4

x =  [tex]\frac{4}{2}[/tex]

x = 2

b. 3x +7 = 2x -4

3x -2x = -4 -7

x = -11

c. 5x -9 = 3x +4

5x -3x = +4 +9

2x = 13

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

x = 6.5

d. 5x -1 = 7x -4

5x -7x = -4 +1

-2x = -3

x = [tex]\frac{-3}{-2}[/tex]

x = [tex]\frac{3}{2}[/tex]

x = 1.5

e. 8x = 4x -8

8x -4x = -8

4x = -8

x = [tex]\frac{-8}{4}[/tex]

x = -2

f. 4x +15 = 12 +3x

4x -3x = 12 -15

x = -3

g. -12x = -36​

x = [tex]\frac{-36}{-12}[/tex]

x = [tex]\frac{36}{12}[/tex]

x = 3