OTHER CLASS VII TOPICS
Algebraic Expressions
Algebraic Expressions
Exponents
Exponents
Integers
Addition and Subtraction of Integers
Comparison of Integers
Division of Integers
Ordering of Integers
Linear Equations
Linear Equations
Polynomials
Polynomials
Ratio and Proportion
Proportion
Ratio
Rational Numbers
Comparison of Rational Numbers
Rational Numbers
Rational Numbers between two rational numbers
Triangles
Pythagoras Theorem
Volume and Surface Area
Volume and Surface Area
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Mathematics
Class VII
Linear Equations
Linear Equations
Question
Nine added to thrice a whole number gives 45. Find the number.
11
12
13
14
Validate
Solution
The correct answer is 12
Explanation
Let the number be x.
∴ 3x + 9 = 45
∴ 3x = 45 - 9
∴ 3x = 36
∴ x = 12
5be0e188-52ac-11ec-b320-5405dbb1cb03
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