Q41Written answer
0 is a solution of the equation x + 1 = 0
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Worked solution
Solution:-
False.
Consider the equation, x + 1 = 0
Then, x = -1
NCERT Exemplar · Class 6 · Maths
Chapter 7: Algebra
Practice each question, then open the answer or worked solution.
Questions
48 questionsQ42Written answer
The equations x + 1 = 0 and 2x + 2 = 0 have the same solution.
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Worked solution
Solution:-
True.
Consider equations x + 1 = 0
So, x = -1
Consider the equation, 2x + 2 = 0
Divide both the side by 2,
Then we get, x + 1 = 0
Therefore, x = – 1
Q43Written answer
If m is a whole number, then 2m denotes a multiple of 2.
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Solution:-
True.
Q44Written answer
The additive inverse of an integer x is 2x.
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Solution:-
False.
Additive inverse of x is – x
Q45Written answer
If x is a negative integer, – x is a positive integer.
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Solution:-
True.
Q46Written answer
2x – 5 > 11 is an equation.
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Solution:-
False.
An expression with a variable, constants and the sign of equality (=) is called an equation.
Q47Written answer
In an equation, the LHS is equal to the RHS.
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Solution:-
True
Q48Written answer
In the equation 7k – 7 = 7, the variable is 7.
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Solution:-
False.
In equation 7k – 7 = 7, the variable is k.