2、2ax+ 10a=3x+ 1

(2a-3)x= 1- 10a

x=( 1- 10a)/(2a-3)

There is no solution when 2a-3=0.

This equation is meaningless.

So a=3/2= 1.5.

3. It is known that both P and Q are prime numbers, and the solution of the univariate linear equation px+5q=97 with X as unknown is x= 1, and the value of the algebraic expression 40p+1kloc-0/q+4 is found.

Because x= 1

So p+5q=97.

97 is odd, so only even+odd = odd.

So one of P and 5q is odd and the other is even.

But since pq is a prime number, only P is even and 5q is odd.

Then we get p=2 and q= 19.

So we can find the value of 40p+ 10 1q+4.