Question

x + 2y = 4. 3x - y = 5
método de suma y resta
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Answer 1

Respuesta:

User: 3x + 2y = 4 2x - y = 5 This system of equations has no solution. has one solution. is coincident

Weegy: 3x + 2y = 4 2x - y = 5 This system of equations has one solution. ***Solve the following system: {3 x+2 y = 4 | (equation 1) 2 x-y = 5 | (equation 2) Subtract 2/3 ? (equation 1) from equation 2: {3 x+2 y = 4 | (equation 1) 0 x-(7 y)/3 = [ 7/3 | (equation 2) Multiply equation 2 by 3/7: {3 x+2 y = 4 | (equation 1) 0 x-y = 1 | (equation 2) Multiply equation 2 by -1: {3 x+2 y = 4 | (equation 1) 0 x+y = -1 | (equation 2) Subtract 2 ? (equation 2) from equation 1: {3 x+0 y = 6 | (equation 1) 0 x+y = -1 | (equation 2) Divide equation 1 by 3: {x+0 y = 2 | (equation 1) 0 x+y = -1 | (equation 2) Collect results: Answer: | | {x = 2 y = -1 ]

emdjay23|Points 3068|

User: Find the slope of the line passing through the points (3, 8) and (-2, 5). 3 3/5 13

Weegy: B.3/5

jher000|Points 8065|

User: Find the x-intercept of the line whose equation is 10x + 3y = 1. 1/3 1/10

Weegy: The x-intercept of the equation 10x + 3y = 1 is letter B, 1/10. The x-intercept is the value of x when y is equal to zero.

tizhoopaper|Points 53|

User: Find the solution to the equations. 2x - y = -3 x + y = 0 (0, 0) (-1, 1) (1, -1)

Weegy: A.(0, 0) is the answer. x=0, y=0

migzptz|Points 7632|

User: 8x + 13y = 2 y = x- 2 Solve the system of equations (4/3, -2/3) (4/21, -38/21) no solution

Weegy: Mathematically speaking, the answer would be x = 22/27, y = -16/27. Source: Wolfram|Alpha

Neckveu|Points 150|

User: Choose the correct graph to fit the equation. 3y = 2x + 3

Weegy: The answer is x=3n, y-2(n-1)

jeifunk|Points 13812|

Answer 2

Respuesta:

x=2

y=1

Explicación:

x + 2y = 4

3x - y = 5

multiplicamos la segunda ecuación por 2 para eliminar y:

x + 2y = 4

6x - 2y = 10

——————

7x = 14

x= 14/7

x=2

para encontrar y, sustituimos el valor de x en cualquiera de las ecuaciones:

2 + 2y = 4

2y = 4 - 2

2y = 2

y = 2/2

y = 1