" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
-x+3y=-5 x-3y=5
x-y=1 -3x+3y=-3
2y=-4/:2 -2x=2/-2
y=-2 x=1
b) 4x-6y=2/*-1 b) 4x-6y=2
4x+y-9=0/+9 4x+y-9=0/+9/*6
-4x+6y=-2 4x-6y=2
4x+y=9 24x+6y=54
7y=7/7 28x=56/28
y=1 x=2
c) 3x-4y=-1 c) 3x-4y=-1/*2
2x+y=3/*4 2x+y=3/*-3
3x-4y=-1 6x-8y=-2
8x+4y=12 -6x-3y=-9
11x=11/11 -11y=-11/:-11
x=1 y=1
d) 2x+3y=-4/*-2 d)2x+3y=-4 /*-5
5x+6y=-7 5x+6y=-7/*2
-4x-6y=8 -10x-15y=20
5x+6y=-7 10x+12y=-14
x=1 -3y=6/-3
y=-2
e)2x+4y-10=0/+10 2x+4y-10=0/+10/*5
-2x-5y=-18 -2x-5y=-18/*4
y=-8 10x+20y=50
-8x-20y=-72
2x=-22/2
x=-11
x-y=1
5+3y-y=1
2y=1-5
2y=-4
y=-2
x=5+3*(-2)=5+(-6)=-1
b)4x-6y=2
-4x-y+9=0
-7y+9=2
-7y=-7
y=1
4x=2+6y
x=0,5+1,5y
x=0,5+1,5*1=2
c)3x-4y=-1
2x=3-y
3x-4y=-1
x=1,5-0,5y
3*(1,5-0,5y)-4y=-1
4,5-1,5y-4y=-1
-5,5y=-5,5
y=1
x=1,5-0,5*1=1,5-0,5=1
d)2x+3y=-4
5x+6y=-7
2x=-4-3y /:2
5x+6y=-7
x=(-4-3y)/2
5x+6y=-7
(5*(-4-3y))/2+6y=-7 /*2
5*(-4-3y)+12y=-14
-20-15y+12y=-14
-3y=-14+20
-3y=6
y=-2
x=(-4+6)/2=1
e)2x+4y-10=0
-2x-5y=-18
x=(10-4y)/2
-2x-5y=-18
-2*((10-4y)/2)-5y=-18
-10+4y-5y=-18
-y=-18+10
-y=-8
y=8
x=(10-4*8)/2=(10-32)/2=-11