Solve for X: Linear Equation with 3.6x and 7.4x + 6.4x Terms

Question

Solve for X:

3.6x+4758=7.4x+6.4x+5 3.6x+47-58=7.4x+6.4x+5

Video Solution

Solution Steps

00:00 Find X
00:05 Collect terms
00:16 Arrange the equation so that one side has only the unknown X
00:32 Collect terms
00:39 Isolate X
00:54 And this is the solution to the problem

Step-by-Step Solution

To solve the equation 3.6x+4758=7.4x+6.4x+5 3.6x + 47 - 58 = 7.4x + 6.4x + 5 , we will follow a step-by-step approach:

  • Step 1: Simplify each side of the equation.
    On the left-hand side, combine constants: 4758=11 47 - 58 = -11 . So, the left-hand side simplifies to 3.6x11 3.6x - 11 .
    On the right-hand side, combine like terms for x x : 7.4x+6.4x=13.8x 7.4x + 6.4x = 13.8x . So, the right-hand side simplifies to 13.8x+5 13.8x + 5 .
  • Step 2: Setup the equation with combined terms.
    The equation is now 3.6x11=13.8x+5 3.6x - 11 = 13.8x + 5 .
  • Step 3: Move terms to isolate x x .
    Subtract 3.6x 3.6x from both sides to get: 11=13.8x3.6x+5-11 = 13.8x - 3.6x + 5.
    This simplifies to: 11=10.2x+5-11 = 10.2x + 5.
  • Step 4: Isolate the variable term.
    Subtract 5 from both sides: 115=10.2x-11 - 5 = 10.2x.
    This gives 16=10.2x-16 = 10.2x.
  • Step 5: Solve for x x .
    Divide both sides by 10.2 to find x x . This results in x=1610.21.56 x = \frac{-16}{10.2} \approx -1.56 .

Therefore, the solution to the equation is x=1.56 x = -1.56 .

Answer

1.56 -1.56