rozwiąż równania ze sprawdzeniami czyli L i P A) 1/7x =-2 b) 5y=13 c) -3/4z=3/4 d) -1/6u=1/3 e) y*12=-60 f) -2w=-1/2 g) 5a=0 h) -7b=7/8 i) 22(-c)=-66 NIE ZAPOMNIJCIE O SPRAWDZENIU! :p
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a) 1/7x = -2 | : 1/7
x = -2 * 7/1
x= - 14
b) 5y = 13 | : 5
y = 13/5
y = 2,6
c) -3/4z=3/4 | : ( - 3/4)
z = - 1
d) -1/6u=1/3 | : ( - 1/6)
u = - 2
e) y*12=-60
12y = -60 | : 12
y = - 5
f) -2w=-1/2 | : -2
w= 1/4 = 0,25
g) 0 = 0 - równanie tożsamościowe
h) -7b = 7/8 | : -7
b = 7/56
b = 1/8
i) 22(-c) = - 66
- 22c = - 66 | : - 22
c = 3
A) 1/7x = -2 /*7
x = -14
Spr. 1/7 * (-14) = -2
1/1 * (-2) = -2
-2 = -2
L = P
b) 5y = 13 /:5
y = 13/5
Spr. 5*13/5 = 13
1* 13/1 = 13
13 = 13
L = P
c) -3/4z = 3/4 /:(-3/4)
z = 3/4 * (-4/3)
z = -1
Spr. -3/4 *(-1) =3/4
3/4 = 3/4
L= P
d) -1/6u = 1/3 /*6
-u = 6/3 *(-1)
u = -2
L = -1/6 * (-2) = 2/6 = 1/3
P = 1/3
L = P
e) y* 12 = -60
12y = -60 /:12
y = -5
L = -5 * 12 = -60
P = -60
L = P
f) -2w = -1/2 /:(-2)
w = 1/4
L = -2 * 1/4 = -2/4 = -1/2
P = -1/2
L = P
g) 5a = 0
a = 0
L = 5 *0 = 0
P = 0
L = P
h) -7b = 7/8 /:(-7)
b = 7/8 * (-1/7)
b = 1/8 * (-1/1)
b = -1/8
L = -7 * (-1/8) = 7/8
P = 7/8
L = P
i) 22(-c) = -66
-22c = -66 /:(-22)
c = 3
L= 22 * (-3) = -66
P = -66
L = P