Question
Solve the following equation and verify the answer:
4x + 7 = 15
4x + 7 = 15
✓
Answer
4x + 7 = 15
⇒ 4x + 7 - 7 = 15 - 7 [Subtracting 7 from both the sides]
⇒ 4x = 8
$\Rightarrow\frac{\text{4x}}{4}=\frac{8}{4}$ [Dividing both the sides by 4]
⇒ x = 2
Verification:
Substituting x = 2 in the L.H.S.
⇒ 4 × 2 + 7 = 8 + 7 = 15 = R.H.S.
L.H.S. = R.H.S.
Hence, verified.
⇒ 4x + 7 - 7 = 15 - 7 [Subtracting 7 from both the sides]
⇒ 4x = 8
$\Rightarrow\frac{\text{4x}}{4}=\frac{8}{4}$ [Dividing both the sides by 4]
⇒ x = 2
Verification:
Substituting x = 2 in the L.H.S.
⇒ 4 × 2 + 7 = 8 + 7 = 15 = R.H.S.
L.H.S. = R.H.S.
Hence, verified.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Tanuj walked 8.62km on Monday, 7.05km on Tuesday, and some distance on Wednesday. If he walked 21.01km in three days, how much distance did he walk on Wednesday?
Divide, and find out the quotient and remainder. Check your answer.
93575 ÷ 400
93575 ÷ 400
The following pictograph shows the number of scooters sold by a company during a week.
Scale is used = 6 scooters sold.
Study the pictograph carefully and answer the questions given below:
Scale is used = 6 scooters sold.
Study the pictograph carefully and answer the questions given below:
-
How many scooters were sold on Monday?
-
How many scooters were sold on Tuesday?
-
On what day of the week was the scale of the scooters maximum? How many scooters were sold on that day?
-
On what day of the week was the scale of the scooters minimum? How many scooters were sold on that day?
Find the smallest 5-digit number which is exactly divisible by $20,25,30$.
→In figure, Write another name for:
→
- $\angle1$
- $\angle2$
- $\angle3$
What should be added to $9\frac{2}{3}$ to get 19?
→The length of a rectangular hall is 5 metres more than its breadth. If the perimeter of the hall is 74 metres, find its length and breadth.
The following figure have been split into rectangles. Find the area. (The measures are given in centimeter)
Find the greatest number which divides 285 and 1249 leaving remainders 9 and 7 respectively.
Compare the fractions given below:
$\frac{11}{12},\frac{13}{15}$
→$\frac{11}{12},\frac{13}{15}$