Rozwiąż równanie i sprawdźa) x+5,4=12,6b)7,61-z=1,29c)5x+1=16d)1/2y-2=-12
a) x+5,4=12,6
x=12,6-5,4
x=7,2
b)7,61-z=1,29
-z=1,29-7,61
-z=-6,32 /*(-1)
z=6,32
c)5x+1=16
5x=16-1
5x=15 /:5
x=3d)1/2y-2=-12
1/2y=-12+2
1/2y=-10 /:1/2
y=-10*2/1
y=-20
a) x + 5,4= 12,6 / - 5,4
x = 12,6 - 5,4
x= 7,2
spr. 7,2 + 5,4 = 12,6
b) 7,61 - z = 1,29 / +z
7,61= 1,29 + z / - 1,29
6,32= z
spr. 7,61- 6,32 = 1,29
c) 5x+1 = 16 / -1
5x= 16-1
5x=15 / :5
x= 15 : 5
x= 3
spr. 5 *3 +1 = 16
d) 1/2y - 2 = -12 / +2
1/2y = - 10 / *2
y = - 20
spr. 1/2 * (-20) - 2= -12
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a) x+5,4=12,6
x=12,6-5,4
x=7,2
b)7,61-z=1,29
-z=1,29-7,61
-z=-6,32 /*(-1)
z=6,32
c)5x+1=16
5x=16-1
5x=15 /:5
x=3
d)1/2y-2=-12
1/2y=-12+2
1/2y=-10 /:1/2
y=-10*2/1
y=-20
a) x + 5,4= 12,6 / - 5,4
x = 12,6 - 5,4
x= 7,2
spr. 7,2 + 5,4 = 12,6
b) 7,61 - z = 1,29 / +z
7,61= 1,29 + z / - 1,29
6,32= z
spr. 7,61- 6,32 = 1,29
c) 5x+1 = 16 / -1
5x= 16-1
5x=15 / :5
x= 15 : 5
x= 3
spr. 5 *3 +1 = 16
d) 1/2y - 2 = -12 / +2
1/2y = - 10 / *2
y = - 20
spr. 1/2 * (-20) - 2= -12