The term simple linear equation refers to the expression that includes the different sets like variable, constant, and operations.
These operations include multiplication, addition, and other terms. The term variable consists of the symbols not present in the fixed values. Example: 2x + 5, in this x is known as the variable.
At the same time, the equation refers to some conditions that apply to variables. It is assumed that the two expressions are always equal.
Several methods are present that will help us get the answer to the equation. One among them is the transposing method.
Things to know about equation
- The equation refers to the variable that always expresses the expressions.
- The LHS of the given equation must be equal to RHS.
- In the equation, we will see the equal signs.
- It does not affect if we change the LHS or RHS of an equation.
Example
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x + 10 = 25
Now, we have to subtract 10 from each side, i.e., x + 10 - 10 = 25 - 10; x = 15.
In the equation, we will see that x = 15.
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4y = 16
We have to divide with 4 from both sides in the given equation.
After division we will see that 4y/4 = 16/4,i.e., y = 4
Simple Linear Equations Sample Questions for Class 7
Question 1
Thrice a number when increased by 105 gives 150. What is the number?
A. 12
B. 16
C. 18
D. 15
Question 2
The ages of A and B are in ratio 4 : 5 , after 5 years there age ratio is 17 : 20. What is the age of A?
A. 15 years
B. 12 years
C. 14 years
D. 10 years
Question 3
A number when multiplied by 14 exceeds itself by 104. Find the number.
A. 16
B. 13
C. 12
D. 8
Question 4
What will be the value of x so as to satisfy given equation?
2/3x + 4 = x + 1
A. 9
B. 12
C. 15
D. 6
Question 5
(a + 4)/ (a - 4) = 5/6. Find a.
A. 8
B. -7
C. -44
D. 16