Advertisements
Advertisements
Question
Solve the following equation: 2x – 3 = 7
Advertisements
Solution
2x - 3 = 7
⇒ 2x - 3 + 3 = 7 + 3 ...(Adding 3 to both sides)
⇒ 2x = 10
⇒ `"2x"/2 = 10/2` ....(Dividing by 2)
⇒ x = 2
∴ x = 5
RELATED QUESTIONS
One-fourth of a number added to two- seventh of it gives 135; find the number.
The difference between the ages of a woman and her son is 19 years and the sum of their ages is 37 years; find the age of the son.
Solve the following equation: 2x ÷ 3 = 7
Solve the following equation: 48 z + 3.6 = 1.2
Solve the following equation: 4x + 4.9 = 6.5
Solve the following equation: `"z"/2.4 + 3.6 = 5.1`
Solve the following equation: `3 2/5 - "y" = 2 1/2`
Solve the following equation: 2 (x - 3) – 3 (x - 4) =12
Solve the following equation: 2(z - 5) +3 (z + 2) - (3 - 5z) =10
If a number x is decreased by 15 and the result is multiplied by 3 to get 81, which equation correctly represents this?
