X+11=6 (×-19)???????? 7 (× + 10)-8 (× + 8)=0???????? 6 (× - 3)-9 (× - 5)=×

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X+11=6 (×-19)
????????

7 (× + 10)-8 (× + 8)=0
????????

6 (× - 3)-9 (× - 5)=× - 1

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valsantina A)x+11=6x-114
-6x+x= -114-11
-5x= -125
x=-125/-5
x= +25

b) 7x+70-8x-64=0
-1x+6=0
x= -6/-1
x= 6

c)6x-18-9x+45=x-1
-3x+27=x-1
-3x-x=-1-27
-4x= -28
x= -28/-4
x=7

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