Respuesta :

Answer:

b = 3

Step-by-step explanation:

7(2b – 5) + 3 = 10  

when doing algebra always remember PEMDAS..(Please Excuse My Dear Aunt Sally) know as Parenthesis, Expontent, Multiplication, Division, Addition, Subtraction

step 1: get rid of parenthesis

Multiply 7 by each number in Parenthesis..   14b - 35  

now the problem should look like: 14b - 35 + 3 =10

Step 2: adding on the same side of the equation  

isolate the problem will read as: (-35 + 3) negative plus a positive means subtract therefore the answer  will be -32

now the problem will read as 14b - 32 = 10

step 3: moving tumblers to the side of the equation and changing the ssign now  

-32 becomes 32

Therefore  add 32 + 10 = 42

the problem reads  14b = 42

Step 4: isolate lithe letter by dividing  

42/14 = 3

Answer: D B = 3

Algebra Exam