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If you mean: 3x-(2x+4x-6) then 3x-2x-4x+6 simplifies to 6-3x
-3x=-21+4x-3x-4x=-21+4x-4x-7x=-217x=217x/7=21/7x=3
4x+7-3x = 15 4x-3x = 15-7 x = 8
3x+5 = 4x-10 In algebra, what you do to one side you do the other Now you add 10 to both sides 3x+5 + 10 = 4x-10+10 3x +15 = 4x now subtract 3x from both sides 3x-3x +15 = 4x-3x 15 = x
No, that's not correct.-3x + 4x = x