Solve for X: Finding X in (1/4)(x-16) + (3/4)x = 8x-11

Question

Solve for X:

14(x16)+34x=8x11 \frac{1}{4}(x-16)+\frac{3}{4}x=8x-11

Video Solution

Solution Steps

00:00 Solve
00:04 We want to isolate the unknown X
00:07 Open parentheses properly, multiply by each factor
00:29 Negative times positive is always negative
00:42 Collect like terms
00:55 Calculate the fraction
01:05 Isolate the unknown X
01:30 Simplify what's possible, collect like terms
01:46 Isolate the unknown X
01:56 And this is the solution to the problem

Step-by-Step Solution

To solve this problem, we'll eliminate fractions by multiplying the entire equation by the least common denominator, and then proceed with algebraic manipulation:

  • Step 1: Multiply every term by the least common denominator, 4 4 , to eliminate fractions:
    4×(14(x16)+34x)=4×(8x11) 4 \times \left(\frac{1}{4}(x - 16) + \frac{3}{4}x\right) = 4 \times (8x - 11) .

  • Step 2: This simplifies to: 1(x16)+3x=32x44 1(x - 16) + 3x = 32x - 44 .

  • Step 3: Distribute within the brackets:
    x16+3x=32x44 x - 16 + 3x = 32x - 44 .

  • Step 4: Combine like terms on the left-hand side:
    4x16=32x44 4x - 16 = 32x - 44 .

  • Step 5: To isolate terms containing x x , subtract 4x 4x from both sides:
    16=28x44 -16 = 28x - 44 .

  • Step 6: Add 44 to both sides to further isolate x x :
    28=28x 28 = 28x .

  • Step 7: Divide both sides by 28 to solve for x x :
    x=1 x = 1 .

Therefore, the solution to the problem is x=1 x = 1 .

Answer

1 1