10b - 45 = 3(b-15)?

Question

solve and show all work

Answer 1

Hey there!

Here's the answer.

10b-45=3(b-15) --> Write the problem.
10b-45=3b-45 --> Simplify the above equation.
10b=3b --> Add 45 on both sides of the equation.
7b=0 --> Subtract 3b on both sides of the equation.
b=0 --> Divide 7 on both sides of the equation.

So the answer is b=0.

Hope it helps!

Answer 2

Hi, first you would want to follow the order of operations. PEMDAS.

10b-45=3(b-15) Take the 3 and multiply it by everything in that ( )

10b -45= 3b-45

Now add your like terms:

add 45 to the -45 that equals 0

Subtract the 3b from the 10b

Now you have this equation: 7b=0

Divide the 7 from both sides and you get:

b= 0

Answer 3

10b - 45 = 3(b-15)
10b-45 = 3*b - 3*15
10b - 45 = 3b -45
10b-45+45 = 3b-45+45
10b=3b
10b-3b = 3b-3b
7b = 0
7b/7 = 0/7
b = 0

Answer 4

10b - 45 = 3(b-15)
10b - 45 = 3b -45
10b - 3b = -45 + 45
7b = 0
b = 0

Answer 5

10b - 45 = 3(b - 15)

10b - 45 = 3b - 45 <--at this point you can see something's up.

7b - 45 = -45
7b = 0
b = 0

Answer 6

10b - 45 = 3(b - 15)
= 3b - 45

Add 45 to both sides.

10b = 3b

Subtract 3b from both sides.

7b = 0

Divide both sides by 7

b = 0

Answer 7

10b - 45 = 3(b - 15)
10b - 45 = 3b - 45
10b - 3b - 45 = 3b -3b - 45
7b - 45 = -45
7b - 45 + 45 = -45 + 45
7b = 0
b = 0

Answer 8

10b = 3b -45 + 45
10b = 3b which is not true, 10 does not = 3 , so b must be zero

Answer 9

10b - 45 = 3b - 45
10b - 3b = -45 + 45
7b = 0
b = 0

Answer 10

10b-45=3(b-15)

10b-45=3b-45
-3b+45=-3b+45

7b=0

b=0