Question

An equation and the steps to solve it are shown below:

Answer 1

Answer:

Step 3, because a number has been added only to one side of the equation

Step-by-step explanation:

Here, the given equation is,

$7x-\frac{1}{2}(8x+4)=6$

The steps for solving this equation would be,

Step 1 : Apply distributive property on left side of the equation,

$7x-4x-2=6$

Step 2 : Combine like terms in left side,

$3x-2=6$

Step 3 : Add 2 on both sides ( additive property of equality ),

$3x-2+2 = 6+2$

Step 4 : Combine like terms,

$3x=8$

Step 5 : Isolate x,

$x=\frac{8}{3}$

Thus, by the above explanation it is clear that he did it mistake on step 3, ( he did not add 2 on right side of the equation ),

Hence, Third option is correct.

Answer 2

Step 3....because a number has been added only to one side of the equation