Advertisements
Advertisements
प्रश्न
Solve the following equation and verify the answer:
6x + 5 = 2x + 17
उत्तर
6x + 5 = 2x + 17
⇒ 6x − 2x = 17 − 5 [Transposing 2x to the L.H.S. and 5 to the R.H.S.]
⇒ 4x = 12
⇒
⇒ x = 3
Verification:
Substituting x = 3 on both the sides:
L.H.S.: 6(3) + 5
= 18 + 5
= 23
R.H.S.: 2(3) + 17
= 6 + 17
= 23
L.H.S. = R.H.S.
Hence, verified.
APPEARS IN
संबंधित प्रश्न
Set up an equation in the following case:
The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. (Take the lowest score to be l.)
Add the following:
- m^2 - 2m - 7
_______________
Simplify:
xy − [yz − zx − {yx − (3y − xz) − (xy − zy)}]
Write the following statement as an equation:
A number divided by 8 gives 7.
Verify by substitution that the root of 3x − 5 = 7 is x = 4.
Solve the following equation and verify the answer:
The number of boys in a school is 334 more than the number of girls. If the total strength of the school is 572, find the number of girls in the school.
If x = 1, y = 2 and z = 3 then (x2 + y2 + z2) = ?
Write the following statement in the form of the equation:
One-fourth of m is 3 more than 7.
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
7 = (11 × 5) − (12 × 4)
