Advertisements
Advertisements
प्रश्न
Solve the following equation: 7z + 15 = 3z – 13
उत्तर
7z + 15 = 3z – 13
⇒ 7z + 15 - 3z = 3z - 13 - 3z (Subtracting 3z from both sides)
⇒ 4z + 15 = - 13
⇒ 4z + 15 - 15 = - 13 - 15 ...(Subtracting 15 from both sides)
⇒ 4z = - 28
⇒ `"4z"/4 = (- 28)/4` ...(Dividing by 4)
⇒ z = - 7
APPEARS IN
संबंधित प्रश्न
A whole number is increased by 7 and the new number so obtained is multiplied by 5; the result is 45. Find the whole 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: 3y + 8 = 13
Solve the following equation: x - 3 = `5 1/2`
Solve the following equation: `3/5"x" + 4 = 13`
Solve the following equation: 48 z + 3.6 = 1.2
Solve the following equation: `"z"/2.4 + 3.6 = 5.1`
Solve the following equation: 5x – 2x +15 = 27
Solve the following equation: 5y – 15 = 27 -2y
Solve the following equation: (7y +8) +7= 8
