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Subjects>Math>Math & Arithmetic

How do you solve 3x plus 4x equals 8-x?

Updated: 12/15/2022

Wiki User

∙ 14y ago

Best Answer

3x+4x=8-x 7x=8-x (combine like terms [the "x's" in this equation])
7x+x=8 (add x to each side to get x on only one side)
8x=8 (combine like terms)
8x/8=8/8 (divide each side by 8)
x=1 (simplify)

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∙ 14y ago

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How do you solve 4x plus 7-3x equals 15?

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

How do you solve 5 plus 4x - 7 equals 4x plus 3 - 1x?

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

How do you solve 7x plus 12 equals 3x?

7x = 3x - 12 4x=-12 x=-3

How do you solve 3x plus 2y equals 4 4x plus 3y equals 7?

You need to organise your question properly. 3x+2y=4 4x + 3y= 7? Is 4 4x = 44x or 4-4x or 4+4x How can there be 2 equal signs in 1 equation?

What is 4x plus 7 plus 3x equals 19 plus x?

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

Related questions

How do you solve 4x plus 7-3x equals 15?

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

How do you solve 5 plus 4x - 7 equals 4x plus 3 - 1x?

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

How do you solve 7x plus 12 equals 3x?

7x = 3x - 12 4x=-12 x=-3

How do you solve 3X plus 7 equals 4X?

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

Solve by substitution 3x plus 2y equals 6 4x-y equals 2?

4x-y=2, thereforey=4x-2sub y into 3x+2y=6...3x+8x-4=611x=10x=10/11

How do you solve 3x plus 2y equals 4 4x plus 3y equals 7?

You need to organise your question properly. 3x+2y=4 4x + 3y= 7? Is 4 4x = 44x or 4-4x or 4+4x How can there be 2 equal signs in 1 equation?

How do you solve 4x plus 9 equals 7x plus 3?

4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2

What is the answer to 3x plus 7 equals 4x?

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

How do you solve 5 plus 4x - 7 equals 4x plus 3 - 1x algrebracially?

5+4x-7=4x+3-1x 4x-2=3x+3 (combined the like terms) +2 +2 (add 2 to both sides) 4x=3x+5 -3x -3x (subtract 3x from both sides) x+5

What is 4x plus 7 plus 3x equals 19 plus x?

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

Solve by substitution method y equals -4x - 7 y equals 3x?

y= -4x-7 y=3x 3x= -4x-7 3x+4x=7 7x=7 x=1

-3x plus 4x equals 7x?

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

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