can any1 solve this 2(x+21)-7=14d+8?

Answer 1

First check that you copied the question correctly. There are 2 variables and only one equation. Usually this would not be the case if you want to obtain a unique answer.

So what you can do is solve for one of the variables in terms of the other. Solve for x

x = 7d - 27/2

Now assume some values for d (here we are taking some liberty as we do not know if in fact d can have the values we select)

This will give you a series of ordered pairs...plot these and see what you have found :-)

X d
0
2
4
-2
-4
-6


GOOD LUCK !!

Answer 2

You have 1 equation with 2 unknowns (x and d).
When you have more unknowns than equations, there is not a single solution (except when it's an oddball equation).

Here, d can be any value you choose, and you can find a value of x that works with it. You could make a graph showing the relationship of x and d (it would be a straight line on the graph).

If you simplify the equation, you can convert it to:
x = 7 d -27/2
As mentioned, whatever value you choose for d, you can use this equation to find the corresponding value of x.
(Example: if d is 0, x is -27/2)

Answer 3

2x + 34 = 14d + 8
2x = 14d -26
x = 7d - 13

now substitude the x

2(7d - 13) + 34= 14d + 8
14d + 8 = 14d + 8
d= 0

x= 7(0) -13
x= -13

Answer 4

it is 2x +42 -7 = 14d +8
so 2x = 14d - 27
So the solution is a line that pass by (0,-27/2) and (2, -1/2)

Answer 5

Okay chester isn't that cheating? You still have to get it to take the test. Don't sell yourself short and practice. With practice comes understanding. I just went through it. If you won't practice then you will never get it.

Answer 6

Can't be done; two different variables need at least 2 different equations

Answer 7

r u solving 4 "x" or "d"?

Answer 8

It's your homework,you do it