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Q: -3x equals -21 plus 4x

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3x + 7 = -4x + 28 implies 7x + 7 = 28

3x+7=4x 7=4x-3x 7=x

4x plus 7 plus 3x equals 19 plus xx = 2

No, that's not correct.-3x + 4x = x

If: 3x+5 = 4x+1 Then: x = 4

x = 15 as 4*15+6 = 66 3*15+21 = 66 or an easier way to do it 4x - 3x = 1x 21 - 6 = 15 1x = 15

4x + 5 = 3x + 84x-3x + 5 - 5 = 3x - 3x + 8 -5x = 3

4x + 10 + 3x = 40 - 3x 4x + 10 + 3x + 3x = 40 20x = 40 x = 2

3x+5= 4x-10+10 +103x+15= 4x-3x -3x15=X

4x+7-3x = 15 4x-3x = 15-7 x = 8

3x + 4x = 847x = 84divide both sides by 7x = 12

19 (7 + 12 = 4x - 3x)

4x=3x+1 => (4x-3x)=1 => x=1 therefore the value of x is 1.

x = 5

4x + 2 = 3x + 9 x + 2 = 9 x = 7

4x+6-7x+9=18-3x+15=18-3x=3x=-1

x=5

x = 10

x = -10

5+4x-7 = 4x+3-x 4x-2 = 3x+3 4x-3x = 3+2 x = 5

3x+7=4x-73x=(-)7+4x-4x(-)1x=(-)7________(-)1x=7add (-3x) to each side of equation3x +7 = 4x-3x +3x +7 = 4x -3x0 +7= 1x7=x

X=2

3x - 12 = 10x - 15 - 6x -10 3x - 12 = 4x -25 3x + 13 = 4x 13 = 4x - 3x 13 = x None?

(9,3)

3x + 4 = 4x - 5 Add 5 to both sides: 3x + 9 = 4x Subtract 3x from both sides: 9 = x