Answer:
x=6 b=45
Step-by-step explanation:
45=5x-15. 45-15=30. 5x=30. x=6. b=45
c. (-1)²+0²=1
hope it is helpful to you.
q=24
the opposite of division is multiplication so 4x6=24. then you check this by of course imputing your answer into the equation. 24 ÷ 6 =4
