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Subjects>Math>Calculus

4x plus y equals 7 2x-3y equals -7?

Updated: 4/28/2022

Wiki User

∙ 14y ago

Best Answer

(A): 4x + y = 7

(B): 2x - 3y = -7

2*(B) 4x - 6y = -14

Subtract from (A)

7y = 21

Divide both sides by 7: y = 3

Substitute in (A): 4x + 3 = 7

ie 4x = 4 or x = 1

Answer: x = 1 , y = 3

Wiki User

∙ 14y ago

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Continue Learning about Calculus

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

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

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

2x plus 5 equals 7-4x?

2x + 5 = 7 - 4x ie 2x + 4x = 7 - 5 ie 6x = 2 x = one third.

How do you solve x plus 2 equals -4x plus 7?

Add 4x - 2 to each side: 5x = 5 x = 1

4x - 7 equals -15 what is x?

4x - 7 = -15 4x = -8 x = -2

Related questions

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

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

What is 5x equals 4x plus 7?

If: 5x = 4x+7 Then: 5x-4x = 7 And: x = 7

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

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

What is the anwer to 4x plus 7 equals 9x plus 7?

4x+7=9x+7 -5x=0 x=0

What mistake was made in this equation 3x plus 7 equals -4x plus 28 -x plus 7 equals 28 -x equals 21 x equals -21?

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

What is 4x plus 7-8x equals 17?

4x+7-8x=17-4x+7=17-4x=10x = -5/2

4x plus 7 equals 6x plus -7?

4x + 7 = 6x -7 14=2x so x = 7 (plus a negative # is simply - that number)

-4x plus 7 equals 11?

= 3

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

If 4x + 7 = 3... then x must equal -1

What is the answer to 4x-7 equals 2x plus 15?

4x - 7 = 2x + 15 4x = 2x +222x = 22x = 11

What is the solution for x in this problem in 4x plus 7-8x equals 17?

4x + 7 - 8x = 17-4x + 7 = 17-4x = 24x = -6

How to slove 4x plus 7 31?

The math problem 4x plus 7 times 31 equals 8. This is taught in math.

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