7. Linear Equations and Inequalities
iGCSE (2021 Edition)
7.01 Introduction to equations
Interactive practice questions
Which of the following describes an "equation"?
An equation is a number sentence where all expressions are equal to zero.
A
An equation is any number sentence that uses a variable.
B
An equation is a number sentence that joins two expressions with an equals sign.
C
An equation is any mathematical expression following an equals sign.
D
Easy
< 1min
When is an equation true?
Easy
< 1min
Is the following equation true or false?
$22+6=4\times7$22+6=4×7
Easy
< 1min
Is the following equation true or false?
$51-6=18+4\times8$51−6=18+4×8
Easy
< 1min
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