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26-2x-9=1
2x=1+9-26
2x=-16 /:2
x= -8
b.
3/5y+2/5=4
5/5y=4
1y=4 /:1
y=4
c.
9x-3/10=9x-0,2
9x-9x=-2/10+3/10
x=1/10
Mam nadzieję, że pomogłam, pozdrawiam, Eloo :3 xx