Question

Andrea chai tea solve the equation 1/4(x+12)=2.What was his mistake

Answer 1

Answer:

He was supposed to cross multiply the equation in the original equation. Step 2 was a wrong expression

Explanations:

The given equation is:

$\frac{1}{4}(x\text{ + 12) = 2}$

Cross multiply the equation, the equation becomes:

$x\text{ + 12 = 8}$

x = 8 - 12

x = -4

His mistake was in step 2, he did not properly expand the equation

The proper step was to cross multiply in step 2