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2(x+3)=10
2x+6=10
2x=10-6
2x = 4
x=2
2.
3(1-x)+2=7
3-x+2=-7
-x=-7-3-2
-x=-12
x=12
3.
3(x+3)=2(x+4)+x+1
3x+9=2x+8+x+1
3x-2x-x=8-1-9
0=0
4.
4(x-2)-2(x-4)=5(x+1)-3x
4x-8-2x+8=5x+5-3x
4x-2x-5x+3x=5+8-8
0=5
5.
(2y+4)/4=½y+1 /*4
2y+4=2y+4
0=0
2x+6=10
2x=10-6
2x=4/:2
x=2
b)3(1-x)+2=-7
3-3x+2=-7
-3x=-7-3-2
-3x=-12/:(-3)
x=4
c)3(x+3)=2(x+4)+x+1
3x+9=2x+8+x+1
3x-2x-x=8+1-9
0=0
d)4(x-2)-2(x-4)=5(x+1)-3x
4x-8-2x+8=5x+5-3x
4x-2x-5x+3x=5+8-8
0=5
2.
a)⅗y+⅖=4
3/5y=4-2/5
3/5y=3 i 3/5/: 3/5
y=6
b)(2y+4)/4=½y+1
1/2y+1=1/2y+1
1/2y-1/2y=1-1
0=0
mam nadzieje ze pomogłam. licxe na naj;)