Question

Mam rozwiązac równania:
a) 2x +6=20
b)23 + 9y= 50
c)8y - 36 = 24
d)-4c - 46 = -2
e) 13+ 2x = 3
f) -7 = 5x+1

Answer 1

A) 2x +6=20
2x = 20 - 6
2x = 14 / : 2
x = 7
b)23 + 9y= 50
9y = 50 - 23
9y = 27 / : 9
y = 3
c)8y - 36 = 24
8y = 24 + 36
8y = 60 / : 8
y = 7,5
d)-4c - 46 = -2
-4c = -2 + 46
-4c = - 44/ : (-4)
c = 11
e) 13+ 2x = 3
2x = 3 - 13
2x = -10 / : 2
x = -5
f) -7 = 5x+1
-7 - 1 = 5x
-8 = 5x / :5
- 1 3/5 = x

Answer 2

A)2x +6=20
2x=20-6
x= 14 / 2
x=7
b)23 + 9y= 50
9y= 50 - 23
y = 27 /9
y= 3
d)-4c - 46 = -2
-4c = -2 + 46
-4c = 44 razy -1
c = -44 / 4
c = -11
e) 13+ 2x = 3
2x = 3 - 13
x = -5
f) -7 = 5x+1
- 5x = 7 + 1
-5x = 8 razy -1
5x= -8 /5
x = 1,6

Answer 3

A 2x+6=20
2x=-6+20
2x=14
x=7

b 23+9y=50
9y=-23+50
9y=27
y=3

c 8y-36=24
8y=36+24
8y=-12


d -4c - 46= -2
-4c=46+2
-4c=48
c=12

e 13+ 2x=3
2x=-13-3
2x=-10
x=5

f -7=5x+1
5x=7-1
5x=6

LICZE NAJ