Advertisements
Advertisements
Question
Solve the following equation: 7z + 15 = 3z – 13
Advertisements
Solution
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
RELATED QUESTIONS
A number increased by 17 becomes 54. Find the number.
One-fourth of a number added to two- seventh of it gives 135; find the number.
Find three consecutive integers such that their sum is 78.
Solve the following equation: 3y ÷ 8 = 13
Solve the following equation: `"x"/2 - 3 = 5`
Solve the following equation: 8y = 3- 3y
Solve the following equation: `"x"/1.2 - 6 = 1`
Solve the following equation: 5y – 15 = 27 -2y
Solve the following equation: (7y +8) +7= 8
Solve the following equation: 2(z - 5) +3 (z + 2) - (3 - 5z) =10
