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4/9x=1/3
4/9x=3/9 /:4/9
x=3/4
o)
1/2x+1/5x-1/10x=2
5/10x+2/10x-1/10x=2
6/10x=2 /6/10
x=3 i 1/3
d)
5=3+7x /-3
2=7x /:7
x=2/7
g)
1/3x+1=5 /-1
1/3x=4 /:1/3
x=12
liczę na naj ;)
4x=3 /4
x=3/4
O. razy 20
10x+4x-2x=40
16x=40 /16
x=40/16=2i8/16
x=2,5
D.5=3+7x
2=7x /7
x= 2/7
G.1/3x+1=5 razy3
1x+3=15
x=12
x=1/3 * 9/4
x=3/4
o)1/2x+1/5x-1/10x=2
5/10x+2/10x-1/10=2
6/10x=2
x=2* 10/6
x=10/3
d)5=3+7x
5-3=7x
2=7x
x=2/7
g)1/3x+1=5
1/3x=5-1
1/3x=4
x=12