Please explain this problem to me. v -4 (4 - v ) = -2(v -1)?

Answer 1

v - 16 + 4v = - 2v + 2
7v - 16 = 2
7v = 18
v = 18 / 7

Just a thought-----
if v - 4(4 - v) = - 2(v + 1)
v - 16 + 4v = - 2v - 2
7v = 14
v = 2 (which is much neater!)

Answer 2

what you want to do is just follow the order of operations (PEMDAS). in this particular equation, multiply your terms first before adding or subtracting anything:

v -4 (4 - v ) = -2(v -1)
v - 16 + 4v = -2v + 2

remember that when you multiply 2 negatives it equals a positive and a positive and a negative equals a negative. so in the next step bring all the v's to the left hand side of the equation and all the integers to the right:

v + 4v + 2v = 2 + 16

now, solve for v:

7v = 18
v = 18/7

Answer 3

To solve for v, use simple algebra:

v - 4 (4 - v) = -2(v - 1) //original problem
v - 16 + 4v = -2v + 2 //multiply what's in the parentheses
-16 + 5v = 2 - 2v //clean it up some
-16 + 5v + 2v = 2 //add 2v to both sides, to get all the v's on the left.
5v + 2v = 2 + 16 //add 16 to both sides, to get all the constants on the right
7v = 18 //clean it up (combine like terms)
v = 18/7 //solve

don't forget to plug in the value for v and check your answer (in this case, you'll want to do it on a calculator)

Answer 4

first solve on the left hand side:
v-16+4v
after that solve on the right hand side:
-2v+2
combined them!
v-16+4v=-2v+2
bring v on the right hand side to the left and numbers to right hand side:
v+4v+2v=2+16
total up them:
7v=18
so, we get v=18/7

CHAIYOK!!! don't give up!
math is easy & interesting subject.

Answer 5

well if you solve for v:


v-4(4-v)=-2(v-1)
v-4(4-v)=-2v+2
v=4(4-v)-2v+2
v=16-4v-2v+2
v=18-6v
7v=18
v=18/7