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2t+5=5t-1
2t-5t=-1-5
-3t=-6 /:(-3)
t=2
Spr:
L=2·2+5=4+5=9
P=5·2-1=10-1=9
L=P
===============
b)
-2x+4=14
-2x=14-4
-2x=10 /:(-2)
x=-5
Spr.:
L=-2·(-5)+4=10+4=14
P=14
L=P
===============
c)
4x+35=-x+5
4x+x=5-35
5x=-30 /:5
x=-6
Spr.:
L=4·(-6)+35=-24+35=11
P=-(-6)+5=6+5=11
L=P
===============
d)
12x+4=7x+14
12x-7x=14-4
5x=10 /:5
x=2
Spr.:
L=12·2+4=24+4=28
P=7·2+14=14+14=28
L=P
===============
e)
2y-2=4y+2
2y-4y=2+2
-2y=4 /:(-2)
y=-2
Spr.:
L=2·(-2)-2=-4-2=-6
P=4·(-2)+2=-8+2=-6
L=P