Question

9) 5a+2 +22, then the value of a is..​

Answer 1

Step-by-step explanation:

Answer

Multiply both side by 3/5.

(

5

3

)5a+(

5

3

)(

3

1

a)=(

5

3

)5

=> 3a+(

5

1

a)=3

Squaring both sides,

9a

2

+(

25a

2

1

)+(

5

6

)=9 {using (a+b)

2

=a

2

+b

2

+2ab)

=> 9a

2

=(

25a

2

1

)=

5

39

Answer 2

Hey there!!

I think you meant:

5a + 2 = 22

find : a

5a + 2 = 22

by transposing 2 to the RHS,

5a = 22 - 2

[Signs change when we transpose numbers from LHS to RHS or vice versa]

5a = 20

$a = \frac{20}{5}$

by reducing to the lowest terms,

a = 4

Verification:

substituting a for 4,

(5 ×4) + 2 = 22

20 + 2 = 22

LHS = RHS = 20

Hence verified.

Hope it helps!

have a great day!