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x+3x+3x-4=7x-4
Odp:mama z dziećmi zjadła 7x-4 jabłek.
liczę na naj ;D
-5(2x+1/5)+7x= - 10x - 1 + 7x = - 3x - 1
2.
x+ 3x + 3x -4 = 7x - 4