a) 4x - 11 = 17
4x = 17 + 11
4x = 28 |:4
[tex]x = 7[/tex]
b) 7,5 + 3y = -6,3
3y = -6,3 - 7,5
3y = -13,8 |:3
[tex]x = - 4.6[/tex]
c) 10x - 6 - 6x = 14
10x - 6x = 14 + 6
4x = 20 |:4
[tex]x = 5[/tex]
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4x=28/4
x=7
b) 7,5+3y= -6,3 /-7,5
3y= -13,8/3
y= -4,6
c) 10x-6-6x=14/+6
10x-6x=20
4x=20/4
x= 5
Mam nadzieje ze pomogłam i licze na naj :))
a) 4x - 11 = 17
4x = 17 + 11
4x = 28 |:4
[tex]x = 7[/tex]
b) 7,5 + 3y = -6,3
3y = -6,3 - 7,5
3y = -13,8 |:3
[tex]x = - 4.6[/tex]
c) 10x - 6 - 6x = 14
10x - 6x = 14 + 6
4x = 20 |:4
[tex]x = 5[/tex]