Forming Equations Flashcards

GCSE Mathematics (Edexcel) 1MA1

Forming an equation

The process of translating a word problem or situation into a mathematical equation using variables, numbers, and operations.

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Terms in this set (10)

Forming an equation

The process of translating a word problem or situation into a mathematical equation using variables, numbers, and operations.

Variable in an equation

A letter or symbol used to represent an unknown value in an equation.

Key step in forming equations

Identify the unknowns, assign variables, and use the information given to set up a mathematical relationship.

Equation for 'twice a number is 10'

2x = 10

Equation for 'a number decreased by 5 is 12'

x - 5 = 12

Equation for 'the sum of a number and 7 is 15'

x + 7 = 15

Equation for 'three times a number is equal to 21'

3x = 21

Equation for 'a number divided by 4 is 8'

x ÷ 4 = 8 or x/4 = 8

Using brackets in equations

Brackets are used to group terms, e.g., 2(x + 3) = 14 means 2 times the sum of x and 3 equals 14.

Solving equations after forming them

Use inverse operations to isolate the variable and find its value.

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