# Math Help - Solving equations.

1. ## Solving equations.

In a practise GCSE mock paper too equations have come up and its told me to solve them. I think i have got the right answers to both of them but i wondered if you could tell me where i've gone wrong, if i have?
so the first one is: 6t + 5 = 2t + 25
I - 5 from both whole numbers.
so i now have 6t = 2t + 20
then i - 2t from both of the algebra numbers
so i now have: 4t = 20
then i divided for 4 on both sides
and the answer i got was t = 5
The second equation 2 (d + 4) = d + 15
i expanded the equation out first: 2d + 8 = d + 15
Then i - 8 from both of the whole numbers
so i now have: 2d = d + 7
then i - d from both of the algebra numbers
so i now have d = 7.
Have i gone wrong anywhere in both of them equations?

2. Looks good to me! You can always (and you should!) plug your solution back into the original equation and check to see if it satisfies it.

3. Hi Mollyx;
there are other ways to do these your way being one way to solve them.
they are both correct as I see it.