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5y=3|:5
y=0,6
b) -3x+6=-9
-3x=6-9
-3x=-3|:(-3)
x=3
c)10x-2=8
10x=-8+2
10x=-6|:10
x=-1,66
4y+6 = 6
4y = 0 /4
y = 4
spr. 1/2 (4*0+6) = 3
1/2 * 6 = 6/2 = 3
-3(x-2) = -9 /(-3)
x-2 = 3
x = 5
spr. -3(5-2) = -3*3 = -9
2(5x-1) = 8 /2
5x-1 = 4
5x = 4+1
5x = 5 /5
x = 1
spr. 2(5*1-1) = 2(5-1) = 2*4 = 8
Proszę :)
(teraz mnożysz ½ przez 4y i 6)
2y + 3 = 3
(wyszło tak, bo skróciłaś 2 z 4 oraz 2 z 6)
2y = 3 - 3
2y = 0
y = 0 : 2
y = 0
Sprawdzenie:
½ (0 + 6) =
= 0 + 3 =
= 3
------------------------------------------------------------------
-3 (x - 2) = -9
-3x + 6 = -9
-3x = -9 - 6
-3x = -15
x = -15 : (-3)
x = 5
Sprawdzenie:
-3 (5 - 2) =
= -15 + 6 =
= -9
-----------------------------------------------------------------
2 (5x - 1) = 8
10x - 2 = 8
10x = 8 + 2
10x = 10
x = 10 : 10
x = 1
Sprawdzenie:
2 (5 - 2) =
= 10 - 2 =
= 8
Dasz naj :P ;***