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2x=38 /÷2
x=19
7x+13=83 /-13
7x=70/÷7
x=10
6y+4=5y+6 /-5y
y+4=6 /-4
y=2
4x+2=8+x /-x
3x+2=8 /-2
3x=6 /÷3
x=2
Niestety rysunku tu nie umie wykonac.