0
Best Answer
-2x = 12 so x = -6 giving -30 + 9 = -42 + 21. Both sides = -21.
Wiki User
∙ 14y agoThis answer is:
Add your answer:
Earn +20 ptsQ: What is5x plus 9 equals 7x plus 21?
Write your answer...
Submit
Still have questions?
Related questions
11x -21 equals 7x plus 3 What is x?
11x - 21 = 7x + 3 4x = 24x = 6
What is 2x plus 2 plus 5x equals 23?
7x = 21 x = 3
If x equals 3 and y equals 2 then 7x plus 5y equals?
7x + 5y 7(3) + 5(2) 21 + 10 = 31
-3x equals -21 plus 4x?
-3x=-21+4x-3x-4x=-21+4x-4x-7x=-217x=217x/7=21/7x=3
What is 7x plus 3y equals 21 a negative or positive slope?
y=mx+b 7x+3y=21 3y=21-7x *****_ y=7-2.3x *****_ m= -2.3 negative
What is value of x 11x plus 9 equals 7x plus 21?
11x+9=7x+21 11x-7x=4 4x+9=21 21-9=12 4x=12 12 divided by 4= 3 x=3
7x plus 33 equals 11x plus 21 what is x?
x=3 actually its 7
Find the answers in 4x plus 3y equals 12 7x plus 3y equals 21?
x = 3 and y = 0
7 x over 8 plus equals 21 what is x?
7x/8 = 21 so 7x = 21*8 x = 12*8/7 = 3*8 = 24
What number is the solution to the equation 22 equals 7x plus 1?
22=7x+1 (take 1 of each side of the equals) 21=7x (divide each side by seven) 3=x (BAM! answer)
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 3x-3 equals 7x 21?
If: 3x-3 = 7x+21 Then: x = -6
Copyright ©2024 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.