" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) x+12=13
x=13-12
x=1
b) 6+x=2
x=2-6
x=-4
c) x-7=9
x=9+7
x=16
d) 3,7+x=2
x=2-3,7
x=-1,7
e) 2x+14 /:2
x=7
f) 1/3x=12 /:1/3
x=36
zad.3
a) -2=x+5
x+5=-2
x=-2-5
x=-7
b) 2 3/8=x+1 1/8
x+9/8=19/8
x=19/8-9/8
x=10/8 = 1 2/8 = 1 1/4
c) 5,3=x-1,4
x-1,4=5,3
x=5,3+1,4
x=6,7
zad.4
a) 5x+4=10
5x=10-4
5x=6 /:5
x=1,2
b) 3x-5=9
3x=9+5
3x=14 /:3
x=4 2/3
c) -2x+3=7
-2x=7-3
-2x=4 /:(-2)
x=-2
zad.5
a)x+8 / 5 = 20 /*5
x+8=100
x=100-8
x=92
b) x-6 / 2 = 4 /*2
x-6=8
x=8+6
x=14
np. 4a×3= to 4 arbuzy razy 3 czyli 12arbuzów = 12a
i tak z wszystkimi literkami a X to byla niespodziank- tak dla ulatwienia ;-)