answersLogoWhite

0


Best Answer

3x + 4x = 84
7x = 84

divide both sides by 7

x = 12

User Avatar

Wiki User

โˆ™ 2009-12-01 04:51:49
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides

Algebra

20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

โžก๏ธ
See all cards
3.7
โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…
323 Reviews

Add your answer:

Earn +20 pts
Q: 3x plus 4x equals 84 7x equals 84?
Write your answer...
Submit
Related questions

-3x plus 4x equals 7x?

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


-3x equals -21 plus 4x?

-3x=-21+4x-3x-4x=-21+4x-4x-7x=-217x=217x/7=21/7x=3


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

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


7x plus 16 equals 3x plus 4?

7x + 16 = 3x + 4 4x = -12 x = -3


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

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


8 plus 7x equals 20 plus 3x what is x?

8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3


How do you solve 3x plus 5 equals 7x - 11?

3x+5=7x-11 5=4x-11 4x=16 x=4


What is the answer to 7x-2 equals 4x plus 9?

7x - 2 = 4x + 9 3x - 2 = 9 3x = 11 x = 11/3


What is -7x plus 3x?

-4x


What is 3x - 2x - 4x plus 7x?

4x


What is 3x plus (-2 plus 4x)?

3x + (-2 + 4x) = -2 + 7x


What is 4x plus 6 minus7x plus 9 equals 18?

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


What is 3x plus 4x?

3x + 4x = 7x


What is the answer to 7x-9 equals 3x plus 5?

7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4


7x-3 equals 3x plus 8?

7x-3=3x+8 7x-3x=8+3 4x=11 x=11/4=2.75


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

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


How do you slove 3x plus 1 plus 4x-5 equals 31?

combine like terms. 3x+1+4x-5=31 3x+4x=7x 7x+1-5=31 1-5=-4 7x-4=31 then solve it 7x=35 x=5


What is the answer to 3x equals 7-4x and why?

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


What is the answer for 3x plus 4-7x equals 5-4x plus 2?

3x+4-7x=5-4x+2 -4x+4=7-4x Adding 4x to each side yields: 4=7, which is not true, so there is no answer (a null set)


What is 4x-2y plus 3x plus 2y?

4x-2y+3x+2y When simplified: 7x


3x-7 plus 4x equals 28?

3x - 7 + 4x = 28 7x - 7 = 28 I added 4x and 3x to get 7x 7x = 35 I subtracted 7 from both sides x = 5 I divided by 7 on both sides


How do you solve this eqation 7x plus 2 equals 3x-2 what is the value of x?

7x+2 = 3x-2 7x-3x = -2-2 4x = -4 x = -1


What is 4x plus 3x equals 35?

If: 4x+3x = 35Then: 7x = 35So: x = 35/7 => x = 5


7x plus 8 equals 4x-10?

Presumably this is an equation in which the value of x is to be found. 7x+8 = 4x-10 7x-4x = -10-8 3x = -18 x = -6


What does 7x-3x equals?

10