Question

a) Efectúa: 3x + 4x –20 = 7x –2x + 16
b) Efectúa: 18x –20 + 2x < 26 -3x

Answer 1

3x + 4x –20 = 7x –2x + 16

7x - 20 = 5x + 16

7x - 5x = 16 + 20

2x = 36

x = 36/2

x = 18

18x –20 + 2x < 26 -3x

20x - 20 <  26 - 3x

20x + 3x  < 26 + 20

23x < 46

x < 46/23

x <  2

CS = < ∞; 2 >

Eternamente axllxa

Answer 2

Respuesta:

a)X=18

b)x=2

Explicación paso a paso:

a)3x+4x-20=7x-2x+16

7x-20=5x+16

7x-5x=16+20

2x=36

x=36/2=18

3(18) + 4(18) –20 = 7(18) –2(18) + 16

b)18x –20 + 2x < 26 -3x

23x=46

x=46/23

X=2