Respuesta :
2x + 3y = 13
4x - y = -2
In the second equation, subtract 4x from both sides.
-y = -2 - 4x
Divide both sides by -1.
y = 2 + 4x
Put this into the first equation in place of y.
2x + 3(2 + 4x) = 13
Multiply everything in the parenthesis by 3.
2x + 6 + 12x = 13
Combine like terms.
14x + 6 = 13
Subtract 6 from both sides.
14x = 7
Divide 14 on both sides.
x = 7 / 14
x = 0.5
Put this into the second equation in place of x.
4(0.5) - y = -2
2 - y = -2
Subtract 2 from both sides.
-y = -4
Divide both sides by -1.
y = 4
So x = 0.5 and y = 4.
Hope this helps!
4x - y = -2
In the second equation, subtract 4x from both sides.
-y = -2 - 4x
Divide both sides by -1.
y = 2 + 4x
Put this into the first equation in place of y.
2x + 3(2 + 4x) = 13
Multiply everything in the parenthesis by 3.
2x + 6 + 12x = 13
Combine like terms.
14x + 6 = 13
Subtract 6 from both sides.
14x = 7
Divide 14 on both sides.
x = 7 / 14
x = 0.5
Put this into the second equation in place of x.
4(0.5) - y = -2
2 - y = -2
Subtract 2 from both sides.
-y = -4
Divide both sides by -1.
y = 4
So x = 0.5 and y = 4.
Hope this helps!
The value of x and y are 0.5 and 4 respectively.
2x+3y=13 ..... i
4x-y=-2 ...... ii
Multiply equation i by 4
Multiply equation ii by 2
8x + 12y = 52 ..... iii
8x - 2y = -4 ...... iv
Subtract iv from iii
14y = 56
Divide both side by 14
14y/14 = 56/14
y = 4
Since 4x-y=-2
4x - 4 = -2
4x = -2 + 4.
4x = 2
x = 2/4 = 0.5
Therefore, x = 0.5 and y = 4
Read related link on:
https://brainly.com/question/5144056
