Question

1. 9x = 45 need to apply the 2. p + 44 = 126 3. - 12 =b-18 i need to apply the property of division property of equality subtraction I p=82

Answer 1

b=6, x=5

Step-by-step explanation

`-12=b-18`

Step 1

action: add 18 in both sides

property: Additive property: When a number is added or subtracted from both sides of the equality, the equality holds

then,add 18 in both sides

`\begin{gathered} -12=b-18 \\ -12+18=b-18+18 \\ 6=b \\ b=6 \end{gathered}`

Step 2

`9x=45`

Action:divide both sides by 9

The property for division : The property for division tells us that if we divide both sides of the equality by a real number (other than zero), we obtain another new valid equality.

`\begin{gathered} 9x=45 \\ (9x)/(9)=(45)/(9) \\ x=5 \end{gathered}`