Rozwiązać ze sprawdzeniem :
a) 8y-36=24
b)23 + 9y=50
c) (-4c) - 46 =(-2)
d) (-7) = 5x +1
e) 33 - 4x =4x
f) 5-10x = (-2x)
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a) 8y-36=24
8y = 24 + 36
8y = 60 /:8
y = 7,5
Spr.
L = 8*7,5 - 36 = 60 - 36 = 24
P = 24
b) 23 + 9y=50
9y = 27 /:9
y = 3
Spr.
L = 23 + 9*3 = 23 + 27 = 50
P = 50
c) (-4c) - 46 =(-2)
-4c = 44 /:(-4)
c = -11
Spr.
L = -4(-11) = 44
P = 44
d) (-7) = 5x +1
-5x = 8 /:(-5)
x = -1,6
Spr.
L = -5(-1,6) =8
P = 8
e) 33 - 4x =4x
-8x = - 33 /:(-8)
x = 4,125
Spr.
L = -8 * 4,125 = -33
P = -33
f) 5-10x = (-2x)
-8x = - 5 /:(-8)
x = 5/8 lub 0,625
Spr.
L = -8*0,625 = -5
P = -5