Question

ayuda por favor¡URGENTE!grasias

Answer 1

1) a) x + 27 = 56

x = 56 - 27

x = 29

b) $x^{2} - 35 = 126$

$x^{2}$ = 126 + 35

$x^{2}$ = 161

x = $\sqrt{161}$

x = 12,68

c) $\frac{x}{5} + \frac{27}{3} = 18$

$\frac{x}{5}$ + 9 = 18

$\frac{x}{5}$ = 18 - 9

x = 9(5)

x = 45

d) $\sqrt{36} . 5 + x = 51$

6.5 + x = 51

30 + x = 51

x = 51 - 30

x = 21

2)

a ) 45x = 90

x = 90/45

x = 2

b) $\frac{3}{4}x = 12\\ x = \frac{12.4}{3}\\ x = \frac{48}{3} \\x = 16$

c) 15 + x = 88

x = 88 - 15

x = 73

d) x - 12 = 15

x = 15 + 12

x = 27

e) 9(3x + 7) = 120

27x +63 = 120

27x = 120 - 63

27x = 57

x = $\frac{57}{27}$

x = $\frac{19}{9}$

f) 3x - 5 = 153

3x = 153 + 5

x = 158/3

3)

a) P + L = 47

L = P - 5

P + P - 5 = 47

2P = 47 + 5

P = 52/2

P = 26

L = 26 - 5

L = 21

Pedro tiene 26 años y Luis 21

b) x + 2x = 540

3x = 540

x = 540/3

x = 180

c) x + x + 1 + x + 2 = 246

3x + 3 = 246

3x = 246 - 3

x = 243/3

x = 81

los números son 81, 82 y 83

d) h + m = 48

m = 3h

h + 3h = 48

4h = 48

h = 48/4

h = 12

m = 3(12)

m = 13

hay 36 mujeres y 12 hombres