Algebra
Calculus
Trigonometry
Matrix
Question
Solve the equation
x=−81
Alternative Form
x=−0.125
Evaluate
x=87×72−83
Solution
More Steps
Evaluate
87×72−83
Multiply the numbers
More Steps
Evaluate
87×72
Reduce the numbers
81×2
Reduce the numbers
41×1
Multiply the numbers
41
41−83
Reduce fractions to a common denominator
4×22−83
Multiply the numbers
82−83
Write all numerators above the common denominator
82−3
Subtract the numbers
8−1
Use b−a=−ba=−ba to rewrite the fraction
−81
x=−81
Alternative Form
x=−0.125
Show Solution
Rewrite the equation
8x=−1
Evaluate
x=87(72)−83
Evaluate
More Steps
Evaluate
87×72−83
Multiply the numbers
More Steps
Evaluate
87×72
Reduce the numbers
81×2
Reduce the numbers
41×1
Multiply the numbers
41
41−83
Reduce fractions to a common denominator
4×22−83
Multiply the numbers
82−83
Write all numerators above the common denominator
82−3
Subtract the numbers
8−1
Use b−a=−ba=−ba to rewrite the fraction
−81
x=−81
Solution
8x=−1
Show Solution
Graph
