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3(2-5x)+5(5+7x)=(1-3x)-(2-2x)​

Sagot :

Bonjour,

3(2-5x)+5(5+7x)=(1-3x)-(2-2x)​

6-15x +25 +35x = 1-3x -2 +2x

31 + 20x  = -x -1

20x + x = -1 -31

21x = -32

x = -32/21