Solve for b. –8b − 10b − –13 = –5

Question

Help with this problem please its for school

Answer 1

First you need to combine your like terms on the left side of your equation.

-8b -10b - -13 =-5

-8b-10b = -18b so your equation becomes -18b - -13 = - 5

now you want to move the 13 to the other side of

the equation. first change the minus a negative into

plus a positive. -18b + 13 = -5

Subtract 13 from both sides to change the 13 to a zero

-18b + 13 - 13 = -5 -13

now your equation becomes -18b = -18

to make -18b into b, divide both sides be -18

-18b /-18 = -18 / -18

and your equation becomes b=1

Insert 1 back into the original equation wherever you have a b to check.your anawer

-18(1) -10(1) - -13 = -5

-18 - 10 + 13 = -5

-5 = -5

because -5 = -5 is true your answer is correct.

So b = 1

Answer 2

Hi Bob! So we want to start by adding/subtracting everything that is similar, and by that I mean: does the number have a variable that it's multiplying, or not? So for -8b - 10b - -13 = -5, we want to simplify this by combining the numbers with b, and the numbers without b.

Negative 8b minus 10b gives us negative 18b, so we have -18b - -13 = -5

Notice that we have negative 18b minus negative 13. Subtracting a negative number is the same as adding that number, so we now have -18b + 13 = -5

Now, we want to subtract 13 from both sides of the equal sign so that we can have only b's on one side, and no b's on the other side.

That means -18b = -5 - 13, which means -18b = -18. Therefore, b = 1.

Answer 3

First combine the like terms,

-8b - 10b - (-13) = -5 I'm not sure if you meant to put a - sign twice, but I'll continue as if you did.

-18b + 13 = -5

Then subtract both sides by 13 to isolate the term with b:

-18b = -18

Divide both sides by -18 to isolate b:

b= 1