Answer:
11. x value = 3
12. x = 2
Explanation:
11.
First you'd simplify the right side of the equation. When there is exponents on both the top and bottom, you can just subtract. The exponent 10 - exponent 3 is 7, so the simplified version would be 11^7 (positive 11 because the two negatives cancel out). Then, you'd have to make the other side equal 11^7. When you multiply two numbers with exponents, the exponents add. The only number that adds to 7 with 4 is 3. So x is 3.
12. Same thing applies, we simplify the right side. First you multiply the numerator, so the exponent 12 multiples with the 2, making the numerator 6^24. Then you subtract the denominator, 6^4 from that, getting 6^20. Now the left side has to equal 6^20. Instead of adding to 20, we have to multiply to 20, so 2 is the only number that multiples to 20 with 10.