Question

resuelve las siguientes ecuaciones decimales:
[tex]0.5 \times - 3 = 0.2 \times + 18[/tex]
[tex]0.04(3y - 60.5) = 1[/tex]

plis ayúdenme con las 4 les doy corona​

Answer 1

Verified answer

Respuesta:

1) 70, 2) 28.5 3) 15 4) 5

Explicación paso a paso:

1) 0.5x - 3 = 0.2x + 18

0.3x = 21

3x/10 = 21

x/10 = 7

x = 70

2) 0.04(3y - 60.5) = 1

1(3y - 60.5)/25 = 1

3y - 60.5 = 25

3y = 85.5

y = 28.5

3) (0.5x - 6)/0.3 = 0.1x/0.3

0.5x - 6 = 0.1x

0.4x = 6

2x/5 = 6

x/5 = 3

x = 15

4) (7.52x - 1)/2 = 3.46x + 1

7.52x - 1 = 6.92x + 2

0.6x = 3

3x/5 = 3

x = 5