aleezajan07
Answered

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Solve the simultaneous equation
2x-4y=19
3x+5y=1
Plz help me I’ve been stuck on this for a while 20 points

Sagot :

maxamoah58

Answer:

x=4.5

y=-2.5

Step-by-step explanation:

Multiply 2x-4y=19 by 3

Multiply 3x+5y=1 by 2

Solve simultaneously

Answer:

[tex]x=\frac{9}{2} =4.5, y=-\frac{5}{2} =-2.5[/tex]

Step-by-step explanation:

[tex]2x-4y=19, multi ply- by 5\\10x-20y=95 , Eq I\\3x+5y=1, multiply - by 4\\12x+20y=4, Eq II\\Add -EQI -and- EqII\\\\10x-20y+12x+20y=95+4\\22x=99\\x=\frac{99}{22}=\frac{9}{2} =4.5\\3(\frac{9}{2})+5y= 1\\5y=1-\frac{27}{2} =-\frac{25}{2}\\y=-\frac{25}{2}*\frac{1}{5} =-\frac{5}{2} =-2.5\\[/tex]

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