0
$\begingroup$

$10.5x = 5.7x + 29.64$

I've never done anything like the above with two variables of the same on both side, I'm thinking of subtracting 29.64 on the other side but I don't know if I can add it to 10.5x

$\endgroup$
1
$\begingroup$

Hint: Remember that you can do anything to either side of the equation so long as you do the same thing to both sides (so it preserves equality). So try subtracting $5.7x$ from both sides. You'll get:

$$10.5x - 5.7x = 5.7x - 5.7x + 29.64$$ $$4.8x = 0x + 29.64$$

And so now we're at:

$$4.8x = 29.64$$

How can you get $x$ by itself at this point?

$\endgroup$
0
$\begingroup$

$$10.5x - 5.7x = 5.7x - 5.7x + 29.64$$ $$4.8x = 0x + 29.64$$ $$x = 29.64/4.8$$ $$x = 6.175$$

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.