Flashcards in Equations, Expressions and Inequalities Deck (13):

1

## Solve 3x=12

###
x=4

Divide both sides by 4

2

## Solve x-9=11

###
x=20

Add 9 to both sides

3

## Solve x+7=23

###
x=16

Subtract 7 from both sides

4

## Solve x/4=8

###
x=32

Multiply both sides by 4

5

## Expand 3(x+7)

### 3x+21

6

## Expand 4(x-5)

### 4x-20

7

## Expand 5(8-x)

### 40-5x

8

## Expand 6(3-2x)

### 18-12x

9

## Expand 7(4x+3)

### 28x+21

10

## Write an expression which means ‘multiply x by 6 then subtract 1’

### 6x-1

10

## Write an expression which means ‘multiply n by 3 then add 7’

### 3n+7

11

## Write an expression which means ‘subtract 4 from n then multiply by 7’

### 7(n-4)

12