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-11x = 395 + y
14y = -634 - 10x
2007-12-21 10:01:18 · 8 answers · asked by Jaz 'ma' Taz 2 in Science & Mathematics ➔ Mathematics
Method of Substitution:
-11x = 395 + y
or y = -11x - 395 _______ (1)
14y = -634 - 10x
10x + 14y = -634
or 5x + 7y = -317 ______ (2)
Substitute the value of 'y' from equation (1) in equation (2)
5x + 7(-11x - 395) = -317
5x - 77x - 2765 = -317
-72x = 2448
x = -34
Substituting this value of 'x' in equation (1)
y = -11*(-34) - 395 = -21
Ans: x = -34, y = -21
2007-12-21 10:10:37 · answer #1 · answered by psbhowmick 6 · 1⤊ 0⤋
Solve equation #1 for y --> y=-11X-395
Plug into equation #2: 14(-11X-395)=-634-10X
Multiply thorough, put all x's on one side, and divide both sides by whatever the coefficient of x is. What's left on the other side is the value of x. Plug this into [y=-11x-395] to get the value of y.
2007-12-21 10:10:06 · answer #2 · answered by washington610 1 · 0⤊ 1⤋
-11x = 395 + y . . . . . equation 1
14y = -634 - 10x . . . equation 2
y = - 11x - 395 . . . substitute to equation 2
14y = -634 - 10x
7y = - 317 - 5x
7 (- 11x - 395) = - 317 - 5x
-77x - 2765 = - 317 - 5x
72 x = - 2448
x = - 34
y = - 11x - 395 = -21
2007-12-21 10:13:58 · answer #3 · answered by CPUcate 6 · 0⤊ 0⤋
there are distinctive the thank you to unravel it. One is thru successive removing. case in point, multiply equation 2 through 5, and equation a million through 9. upload the two equations at the same time, and x would be eradicated. stick to the comparable habitual for equations 2 and 3 to do away with x there. then you definately've 2 equations in 2 unknowns. shop doing the comparable till you're left with a million equation. you additionally can use Cramer's rule. seem it up on the internet. p.s. x = -40, y = 34, z = -17
2016-12-11 11:04:42 · answer #4 · answered by ? 4 · 0⤊ 0⤋
*-11x-y=395 -eq.1-
*10X+14y=-634 -eq.2-
by multiplying eq.1 by 14 then adding to eq.2
-154x-14y=5530
+10X+14y=-634
therefore: -144x=4896 x=-34
by substution in eq.1:
(-11*-34)-y=395 y=-21
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2007-12-21 10:27:25 · answer #5 · answered by Toto 2 · 0⤊ 0⤋
-11x - y = 395
10x + 14y = - 634
- 154x - 14y = 5530
10x + 14y = - 634-------ADD
- 144x = 4896
x = - 34
374 = 395 + y
y = - 21
x = - 34 , y = - 21
2007-12-24 02:38:50 · answer #6 · answered by Como 7 · 1⤊ 0⤋
Solve? u mean intersection point?
2007-12-21 10:09:18 · answer #7 · answered by MW 2 · 0⤊ 1⤋
yah what they sed
2007-12-21 11:36:40 · answer #8 · answered by Harris 6 · 0⤊ 1⤋