-4=1+(2y-10)

Question

Math help need to find the answer of y and figure out if one is in front of parantheses

 

Answer 1

America,  Solving for y:  -4=1+(2y-10).  The parenthesis can be removed;  So, -4=1+2y-10;  Now, combine the like terms on the right side of the equation:  -4=2y-9;  Now add +9 to both sides of the equation:  So, 5=2y;  Now, divide both sides of the equation by 2.  So:  y=5/2 or 2.5    Also, it is understood that 1 is multiplied by everything inside the parenthesis.

 

Answer 2

Yes a 1, not written, is in front the parenthesis. Since multiplication (distribution) by 1 does not change a number, it is not written. 

 

-4 = 1 + (2y - 10)           The parenthesis can be removed

-4 = 1 + 2y - 10              Combine like terms

-4 = 2y - 9                      Add 9 to both sides

5 = 2y                            Divide both sides by 2

2.5 = y

 

{2.5}