Question

Solve the equations1. x+3=12 2. -5+x=103. 3x=300

Answer 1

1. x = 9

2. x = 15

3. x = 100

Step-by-step explanation:

1. x + 3 = 12

First step:

Subtract 3 from both sides of the equation:

x + 3 - 3 = 12 - 3

x = 9

2. -5 + x = 10

Add 5 to both sides of the equation:

-5 + x + 5 = 10 + 5

-5 + 5 + x = 15

x = 15

3. 3x = 300

Divide both sides by 3:

`\begin{gathered} (3x)/(3)=(300)/(3) \\ \\ x\text{ = 100} \end{gathered}`

x = 100