26/57=849/5x
Dont know how to do that!^^^^^^^
And...
4x+1/3=x-5/2
we can cross multiply, do you know how?
we get:
$\displaystyle \frac {4x + 1}{3} = \frac {x - 5}{2}$
$\displaystyle \Rightarrow 3(x - 5) = 2(4x + 1)$
can you continue?
a similar trick can be used for the first, but i wouldn't do it. it's simple enough not to use this trick. remember, our objective is to get x by itself on one side. so whatever is operating on the x, just perform the opposite operation on both sides of the equation to get rid of it
YOU ARE THE BOMB! And really smart.... but I can't figure this one out I cant do algebra with division.
26/57=849/5x
And I tried to solve
$\displaystyle \frac {4x + 1}{3} = \frac {x - 5}{2}$
$\displaystyle \Rightarrow 3(x - 5) = 2(4x + 1)$ but I get to this part and can't continue :
3x-13/8=8x-8
well, we can begin by flipping both sides:
$\displaystyle \frac {26}{57} = \frac {849}{5x}$
$\displaystyle \Rightarrow \frac {57}{26} = \frac {5x}{849} = \frac {5}{849}x$
now i want to get to x, but there is a $\displaystyle \frac 5{849}$ multiplying it, so what do i do? i divide both sides by $\displaystyle \frac 5{849}$, thus i obtain:
$\displaystyle x = \frac {57}{26} \cdot \frac {849}{5}$
now simplify
i don't see how you got to that
And I tried to solve
$\displaystyle \frac {4x + 1}{3} = \frac {x - 5}{2}$
$\displaystyle \Rightarrow 3(x - 5) = 2(4x + 1)$ but I get to this part and can't continue :
3x-13/8=8x-8
what exactly are you doing here? explain your process
ok, that was even more confusing. you cannot have the equal signs all in line like that. add you can't have lines running into each other, as you clearly have. no wonder you're getting confused
$\displaystyle 3(x - 5) = 2(4x + 1)$ ..........expand the brackets
$\displaystyle \Rightarrow 3x - 15 = 8x + 2$ ...........get all the x's to one side
$\displaystyle \Rightarrow 8x - 3x = -15 - 2$ ........simplify
$\displaystyle \Rightarrow 5x = -17$ .....................divide both sides by 5
$\displaystyle \Rightarrow x = - \frac {17}{5}$