September 2018 2 13 Report

1.Rozwiąż

Zadania algebraiczne przykład:

8x-13+7=15z+9

8z-15z=13=7+9

-7z=15 / : (-7)

z=-2 i jedna siódma

a)4x-3+2x=8x-3

b)4t-18-7t=3+9t-15

c)-1+4(2z-1)=3

d)* 3y-2[5(y-1)-4]=4(7-3y)


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