Question

how to solve 2x + 3 = 4(x - 1 )

Answer 1

Answer:

x = 3.5

Step-by-step explanation:

$2x+3=4(x-1)\qquad\text{use the distributive property}\ a(b+a)=ab+ac\\\\2x+3=4x+(4)(-1)\\\\2x+3=4x-4\qquad\text{subtract 3 from both sides}\\\\2x+3-3=4x-4-3\\\\2x=4x-7\qquad\text{subtract}\ 4x\ \text{from both sides}\\\\2x-4x=4x-4x-7\\\\-2x=-7\qquad\text{divide both sides by (-2)}\\\\\dfrac{-2x}{-2}=\dfrac{-7}{-2}\\\\x=3.5$

Answer 2

To solve this problem, you must first write your equation

Equation:

2x+3=4(x−1)

Step 1: Simplify both sides of the equation.

2x+3=4(x−1)  ... Original equation

2x+3=(4)(x)+(4)(−1)  ... Distribute

2x+3=4x+(−4

) ... Answer to above

2x+3=4x−4  ... Getting rid of parenthesis

Step 2: Subtract 4x from both sides.

2x+3−4x=4x−4−4x  ... Getting rid of 4x

−2x+3=−4  ... When you got rid 4x

Step 3: Subtract 3 from both sides.

−2x+3−3=−4−3  ... Getting rid of 3 so we have x=y

−2x=−7  ... When you got rid of 3

Step 4: Divide both sides by -2.

-2x/-2=-7/-2 ... Divide by 2

Step 5: Answer

x=7/2

So the answer is x=7/2 or 3.5