Solve the Linear Equation: 3-(x-4)+8x=14 Step by Step

Question

Solve for X:

3(x4)+8x=14 3-(x-4)+8x=14

Video Solution

Solution Steps

00:00 Solve
00:04 We want to isolate the unknown X
00:07 Open brackets properly, multiply by each factor
00:10 Negative times positive is always negative
00:19 Negative times negative is always positive
00:28 Collect like terms
00:43 Isolate the unknown X
00:54 Simplify what we can
00:59 Isolate the unknown X
01:13 And this is the solution to the question

Step-by-Step Solution

To solve the equation 3(x4)+8x=14 3 - (x - 4) + 8x = 14 , we will simplify and solve for x x step-by-step:

  • Step 1: Distribute the negative sign inside the parentheses:
    (x4)=x+4- (x - 4) = -x + 4.

  • Step 2: Rewrite the equation with the distributed terms:
    3+(x+4)+8x=143 + (-x + 4) + 8x = 14.

  • Step 3: Simplify by combining like terms:
    Combine the constants: 3+4=73 + 4 = 7
    Combine the xx terms: x+8x=7x-x + 8x = 7x.
    This gives us 7+7x=147 + 7x = 14.

  • Step 4: Isolate the xx term:
    Subtract 7 from both sides: 7x=1477x = 14 - 7.
    This simplifies to 7x=77x = 7.

  • Step 5: Solve for xx by dividing both sides by 7:
    x=77x = \frac{7}{7}.
    Simplifying gives x=1x = 1.

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

Answer

1 1