Question
Solve the equation
x=−81
Alternative Form
x=−0.125
Evaluate
8(1−5x)=13
Divide both sides
88(1−5x)=813
Divide the numbers
1−5x=813
Move the constant to the right side
−5x=813−1
Subtract the numbers
More Steps

Evaluate
813−1
Reduce fractions to a common denominator
813−88
Write all numerators above the common denominator
813−8
Subtract the numbers
85
−5x=85
Change the signs on both sides of the equation
5x=−85
Multiply by the reciprocal
5x×51=−85×51
Multiply
x=−85×51
Solution
More Steps

Evaluate
−85×51
Reduce the numbers
−81×1
Multiply the numbers
−81
x=−81
Alternative Form
x=−0.125
Show Solution

Rewrite the equation
8x=−1
Evaluate
8(1−5x)=13
Multiply
More Steps

Evaluate
8(1−5x)
Apply the distributive property
8×1−8×5x
Any expression multiplied by 1 remains the same
8−8×5x
Multiply the numbers
8−40x
8−40x=13
Move the constant to the right side
−40x=5
Multiply both sides
40x=−5
Solution
8x=−1
Show Solution
