Zadanie 1.
We wszystkich przykładach zastosuję mnożenie "na krzyż".
a) = , czyli
x * 5 = -4 * 3
5x = -12 /:(5)
x = -
x = - 2
b) =
2 *5 = 4 * (2y-1)
10 = 8y - 4
10 + 4 = 8y
8y = 14 /:(8)
y =
y = 1
c) =
4 * (z+2) = 5 * (z-1)
4z + 8 = 5z - 5
8 + 5 = 5z - 4z
z = 13
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Zadanie 1.
We wszystkich przykładach zastosuję mnożenie "na krzyż".
a) = , czyli
x * 5 = -4 * 3
5x = -12 /:(5)
x = -
x = - 2
b) =
2 *5 = 4 * (2y-1)
10 = 8y - 4
10 + 4 = 8y
8y = 14 /:(8)
y =
y = 1
c) =
4 * (z+2) = 5 * (z-1)
4z + 8 = 5z - 5
8 + 5 = 5z - 4z
z = 13