Question

if 2a - 3=5 then value of a is​

Answer 1

Answer:

2a−3=5;3b+1=2

2a=8;3b=1

∴3b−2a=1−8=−7

Step-by-step explanation:

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Answer 2

Concept:

Simple algebraic rules,

+ becomes - when taken on other side of "=" sign and vice versa.

× becomes ÷ when taken on other side of "=" sign and vice versa.

Given:

2a - 3 = 5

Find:

The value of a.

Solution:

Given equation is,

2a - 3 = 5

2a = 5 + 3

2a = 8

a = 8 ÷ 2

a = 4

Hence, the value of a is 4.

Verification:

Putting a = 4 in given equation, we get

2a - 3 = 5

2(4) - 3 = 5

8 - 3 = 5

5 = 5

L.H.S. = R.H.S.

Hence verified.

Answer:

The value of a is 4.

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