Question

The value of m in equation 2m + 7 = 9 is *​

Answer 1

- 2m+7=9

- 2m=9-7

- 2m=2

- m=2/2

- m= 1

the value of m is 1

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Answer 2

$\bf 2m + 7 = 9$

Transposing 7 from LHS to RHS, changing its sign,

$\bf \: 2m = 9 - 7$

On simplifying,

$\bf 2m = 2$

Transposing 2 from LHS to RHS, changing its sign,

$\bf \: m = \dfrac{2}{2}$

Dividing 2 by 2,

$\bf \: m = 1.$

Verification :-

To check our answer, we just have to put 1 in place of m and see whether LHS = RHS.

Putting 1 in place of m, we get :-

$\bf \: 2 \times 1 + 7 = 9$

On simplifying,

$\bf \: 2 + 7 = 9$

Simplifying again, we get :-

$\bf \: 9 = 9.$

Since LHS = RHS,

Hence verified!! ✔️✔️