Yes that is correct.
Answer:
1. 15
2. -8/9
3. 5
4. 7
5. a = 20
6. n = 100
7. 3.6 x 10^1
8. 3
9. 4
10. 8.37 x 10^5
11. 6.67 x 10^3
x=2
ab=7
bc=5
Step-by-step explanation:
because you do
2x+3 = 4x+3
-3 -3
2x=4x
-2x -2x
x = 2
2x2+3
4+3
=7
4x2-3
8-3
=5
Answer:6
Step-by-step explanation:2+4
