Hi, Re:Your TY

(1, -2) 4x-3Y=10 or 4*1+3*2=10 4+6=10  Yes

x+4y=7 or 1+4*(-2)=7   1+(-8)=7  No:  -7 ≠ 7

Might Check Your Sign in EQ II:  would yield the solution (1,-2) , y = -2 and x = 1

I.  4x-3y = 10

II. x+4y = 7              ||Signs SO important to the Solution

   4x-3y = 10

  -4x-16y = -28

     -19y = -18

        y = 18/19 = 0.947368421052632  and  x = 3.21052631578947

(1,-2) is a Pt on the fist line, not the 2nd line. The Solution for this system

of Two EQ, is as You found: x = 3.21052631578947, y = 0.947368421052632 





 

RELATED QUESTIONS

2. Solve the system by substitution.

6x - 5y = 11
7x + 5y = 2 
       (1, -2)
       (answered by solver91311)

wats 4x-y=16 also things too 2x=3y=8
y=2x+7
3x=y-1
y=3/4x-7
3y=18
3y=2x-9
5x+4y=10
 (answered by Alan3354)

Help please!

I tried to solve these but I'm not sure if its correct.


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w- x+ y+ z= 10
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PLEASE HELP!!! I need help solving the following problems: 

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Solve the system using the substitution method. Show all your steps.
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