Question

Which is the most efficient first step to solve for x in the equation 3.7x-18=-4.3x-34?

Answer 1

The only valid answer is adding 4.3 x to both sides of the equation. All of the other choices would not help you solve for x.

Answer 2

Answer:

B. Add $4.3x$ to both sides of the equation.

Step-by-step explanation:

We have been given an equation $3.7x-18=-4.3x-34$. We are asked to choose the most efficient first step to solve for x in the equation.

To solve an expression we need to separate variables and constants on different sides of equation.

To solve our given equation we need to add $4.3x$ to both sides of the given equation. After adding $4.3x$ we will get,

$3.7x+4.3x-18=-4.3x+4.3x-34$

$8.0x-18=-34$

Therefore, option B is the correct choice.