Question

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

Add 3.7x to both sides of the equation
Add 4.3x to both sides of the equation
Subtract 18 from both sides of the equation
Subtract 34 form both sides of the equation

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

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

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.