A) 5x-7+x+15-2x
5x+x-2x=-15+7
4x=-8 I:4
x=-2
B) -6x+2y+7+4x-5y-3 DLA x= -0,5 y=0,1
-6x+2y+4x-5y=-3+7
-2x-3y=4
-2*(-0,5)-3(0,1)=4
-1-0,3=4
-1,3=4
C) -(3m)-2m+(-4m) DLA m = (-2)
-3m-2m-4m
-9m
-9(-2)= -18
Licze na naj .. :P Tylko nie jestem pewna czy to dobrze :D
a)5x-7+x+15-2x= 4x+8
b)-6x+2y+7+4x-5y-3= -2x-3y+4= -2(-0,5)-3(0,1)+4=1-0,3+4=-3,3
c)-(3m)-2m+(-4m)=-3m-2m-4m=-9m=-9(-2)=18
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A) 5x-7+x+15-2x
5x+x-2x=-15+7
4x=-8 I:4
x=-2
B) -6x+2y+7+4x-5y-3 DLA x= -0,5 y=0,1
-6x+2y+4x-5y=-3+7
-2x-3y=4
-2*(-0,5)-3(0,1)=4
-1-0,3=4
-1,3=4
C) -(3m)-2m+(-4m) DLA m = (-2)
-3m-2m-4m
-9m
-9(-2)= -18
Licze na naj .. :P Tylko nie jestem pewna czy to dobrze :D
a)5x-7+x+15-2x= 4x+8
b)-6x+2y+7+4x-5y-3= -2x-3y+4= -2(-0,5)-3(0,1)+4=1-0,3+4=-3,3
c)-(3m)-2m+(-4m)=-3m-2m-4m=-9m=-9(-2)=18