Buenas noches ayúdenme porfa la tengo q entregar hoy doy corona y los sigo no miento
Respuestas a la pregunta
Explicación paso a paso:
pregunta 1:
3r - 4y = - 6
2r + 4y = 16
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5r. 0. = 10
5r = 10
r = 10/5
r = 2
2r + 4y = 16
2.(2) + 4y = 10
4 + 4y = 10
4y = 10 - 4
4y = 6
y = 6/4 = 3/2
pregunta B
3r + 2y = 7
4r - 3y = -2
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7r 0 = 5
r = 5/7
3r + 2y = 7
3.(5/7) + 2y = 7
15/7 + 2y = 7
15 + 14y/7 = 7
15 + 14y = 7.7
14y = 49 - 15
14y = 34
y = 34/14
y = 17/7
pregunta c
x = 10-y/2. x = 6 + y/2
x = x
10-y/2. = 6 + y/2
2(10-y) = 2(6+y)
20 - 2y = 12 + 2y
- 2y - 2y = 12 - 20
- 4y = - 8
y = -8/-4
y = 2
x = 6 + y/2
x = 6 + 2/2
x = 8/2
x = 4
pregunta d
a = 7b - 4/8. a =3b + 6/6
7b - 4/8. = 3b + 6/6
6(7b - 4) = 8(3b + 6)
42b - 24 = 24b + 48
42b - 24 b = 48 + 24
18b = 72
b= 72/18
b = 4
a = 7b - 4/8.
a = 7.(4) - 4/8
a = 28 - 4/8
a = 224 - 4/8
a 220/8
a= 27,5
pregunta e
M = 2 + N. M = - 4 + 3N
2 + N = -4 + 3N
2 + 4 = 3N - N
6 = 2N
N = 6/2
N = 3
M = 2 + N
M = 2 + 3
M = 5