Question

resolver las siguientes ecuaciones, 2/5×=5/5. 4(2x-3)/2=7/2. 12(x²-3)=8/5. 2(x+5)/3=11/3

Answer 1

Explicación paso a paso:

1.

$\frac{2}{5}x = \frac{5}{5} \\ \frac{2}{5}x = 1 \\ 2x \: = 5 \\ x = \frac{5}{2} \\ x = 2.5$

2.

$\frac{4(2x - 3)}{2} = \frac{7}{2}$

Simplificamos el 2

$8x - 12 = 7$

8x = 19

$x = \frac{19}{8}$

3.

12x²- 36 = 8/5

60x² - 180 = 8

60x² = 188

x² = 188/60

Simplificamos

x² = 47/15

4.

2(x + 5)/3 = 11/3

Simplificamos el 3

2x + 10 = 11

2x = 1

x = 1/2

x = 0,5