Question
Solve the equation
x=21
Evaluate
3x−70=−3x
Multiply both sides of the equation by LCD
(3x−70)×3=−3x×3
Simplify the equation
More Steps

Evaluate
(3x−70)×3
Apply the distributive property
3x×3−70×3
Multiply the numbers
9x−70×3
Multiply the numbers
9x−210
9x−210=−3x×3
Simplify the equation
9x−210=−x
Move the variable to the left side
9x−210+x=0
Add the terms
More Steps

Evaluate
9x+x
Collect like terms by calculating the sum or difference of their coefficients
(9+1)x
Add the numbers
10x
10x−210=0
Move the constant to the right side
10x=0+210
Removing 0 doesn't change the value,so remove it from the expression
10x=210
Divide both sides
1010x=10210
Divide the numbers
x=10210
Solution
More Steps

Evaluate
10210
Reduce the numbers
121
Calculate
21
x=21
Show Solution

Rewrite the equation
x=21
Evaluate
3x−70=−3x
Reduce the fraction
More Steps

Evaluate
−3x
Use b−a=−ba=−ba to rewrite the fraction
3−x
Reduce the fraction
−31x
3x−70=−31x
Multiply both sides of the equation by LCD
9x−210=−x
Move the variable to the left side
10x−210=0
Move the constant to the right side
10x=210
Solution
x=21
Show Solution
