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x⁻⅔=2
x=2⁺⅔
x=2⅔
b)4(x\5-3)=315
4x\5-12=315
4x\5=315₊12
4x\5=367÷4\5
x=458,75
c)x+3\2*8=x-3
8x+24\2=x-3
8x+12=x-3
8x-x=-3-12
7x=-15\7
x=-2¹₇(to ułamek)
d)4(2x-¾)=53
8x-1=53
8x=53+1
8x=54\8
x=6,75
e)2(x+7)=3(2x-5)
2x+14=6x-15
2x-6x=-15-14
-4x=-29\-4
x=7,25
f) 3(x-5)+7=x+1
3x-15+7=x+1
3x-x=1+15-7
2x=9\2
x=4½