9th grade algebra
posted by serg .
I don't know how to get answer for problem The larger of two numbers is 20 more than the smaller. Four times the larger is 70 more than 5 times the smaller. find the numbers

Let L stand for the larger and S stand for the smaller.
From the second sentence, you know that L = S + 20.
From the second sentence, you know
4L = 5S + 70
Substitute S + 20 for L in the second equation. Solve for S. Put value of S in the first equation to solve for L. Check answers by putting both values in the second equation.
I hope this helps. Thanks for asking. 
The larger of two numbers is 3 times the smaller. Their sum
is 8 more than twice the smaller. Find the numbers.