Question

.a)If y= (7x+4) – (3x+2), then find the value of y for x = 2

b)If a=3, b=-1, then find the value of (2a + 6b)

2.Raju’s father age is 5 years more than three times Raju’s age. Find Raju’s age if his father is 44 years old.

Answer 1

Step-by-step explanation:

A. 18 - 8 = 10

B. 6 - 6 = 0

2. 13 years

Answer 2

Step-by-step explanation:

a)

y = 7x +4 -3x -2

y = 4x + 2

On putting x = 2, we get

y = 4 × 2 + 2

y = 8+2

y= 10

b)

a=3

b=-1

2a + 6b = 2×3 + 6×(-1)

= 6-6 = 0

2)

Let raju's age be x

then 3x+5 will be the age of his father

Father's age is given as 44

So,

3x+5 = 44

3x = 44-5

3x = 39

x = 39/3

x = 13

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