Answer:
Explanation:
by answer i'm guessing that you mean, solve for "b" correct? or another way to say this, is that we want to isolate b. get by itself on one side of the equation, either side is fine, it's not important which side, but it just needs to be alone. :)
-1.4b + 10 = -18
since you're asking about algebra , i'll go slow explaining, but just tell me if I sound like i'm "mansplaining" :0
first , recall to do algebra we need to know the order of operations or P.E.M.D.A.S or Parenthesis, Exponents, , Multiplication, Division, Addition, Subtraction. so, keep in mind, that we want to use these list of "Order of operations" in reverse, that is we start at the bottom and work up on the list. I think math teacher always kinda "gloss" over this point. :/ anyway, looking for any Subtracting... hmm
subtract 10 from both sides
-1.4b + 10 - 10 = -18 - 10
-1.4b = -28
now lets move up the order of operations to "Multipication and Division"
divide both sides by -1.4
-1.4b / -1/4 = -28 /-1.4
b = 20
note that the double negative , on both sides cancel out
and , also, I used my calculator to divide 28 by 1.4 to get 20 :P
understand?