Question

Solve the equation x+7=3 justify each step

Answer 1

x = -4

Explanation:

solve the equation x+7=3 justify each step

x + 7 = 3

• remove 3 from both sides

x + 4 = 0

• solve for x by moving the 4 to the right and changing its sign

x = -4

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check

-4 + 7 = 3

3 = 3

Answer 2

→ -4

Explanation:

Given Equation,

• x + 7 = 3

We have to find,

• Value of x

Solution :

`\sf{ \: \: \dashrightarrow \: \: \: \: \:x + 7 = 3 }`

For finding value of x , we need to isolate it. Therefore, Subtracting 7 to both the sides :

`\sf{ \: \: \dashrightarrow \: \: \: \: \:x + \cancel{7 }- \cancel{7} = 3 - 7}`

`\sf{ \: \: \dashrightarrow \: \: \: \: \:x = 3 - 7}`

`\sf{ \: \: \dashrightarrow \: \: \: \: \: \underline{\boxed{\bold{x = - 4}}}} \: \: \: \bigstar`

• Therefore, value of x is "-4".

Verification :-

→ x + 7 = 3 , ( now x is -4 )

→ -4 + 7 = 3

→ 3 = 3

→ LHS = RHS

→ Hence, Verified.

• Therefore, answer is correct.