Selina Concise Mathematics Class 6 ICSE Solved Exercise 16 Question 5 (i) to (ix)
Selina Concise Mathematics Class 6 ICSE Solved Exercise 16 Question 5 (i) to (ix)
5. Solve:
(i) – 2x = 8
(ii) – 3.5y = 14
(iii) – 5z = 4
(iv) – 5 = a + 3
(v) 2 = p + 5
Solution:
(i) – 2x = 8
x = – 8 / 2
We get,
x = – 4
Therefore, the value of x for – 2x = 8 is – 4
(ii) – 3.5y = 14
y = – 14 / 3. 5
We get,
y = – 4
Therefore, the value of y for – 3.5y = 14 is – 4
(iii) – 5z = 4
z = – 4 / 5
We get,
z = – 0.8
Therefore, the value of z for – 5z = 4 is – 0.8
(iv) – 5 = a + 3
– 5 – 3 = a
On calculating, we get
a = – 8
Therefore, the value of a for – 5 = a + 3 is – 8
(v) 2 = p + 5
2 – 5 = p
We get,
p = – 3
Therefore, the value of p for 2 = p + 5 is – 3
