Solve and show work:?

Two investments earn an annual income of $630. One investment earns an annual simple interest rate of 8.4% and the other investment earns an annual simple interest rate of 10.5%. The total amount invested is $7000. How much is invested in each account?

I will give you a hint to get you started but you have to do the work yourself.
x + y = 7000

.105 x + .084 y = 630
Multiply first equation by -.105
- .105 x - .105 y = - 735
Now add the two equations
- .019 y = - 105
Now solve for y and then substitute that value into the first equation to find the value of x

and when you get out of school....if you should be so lucky as to find a job, whos going to do your job for you?

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