21-10x=42 Solution :

Solve 21-10x=42 equation and find X

Solution :21-10x=42
-10x = 42 - 21
-10x = 21
-10x / -10 = 21 / -10
x = -2.1

For 21-10x=42, group like terms on each side of the equal sign. and isolate the "-10X" term on one side of the equation by adding or subtracting to combine like terms across the equal sign. Finally divide both sides of the equation by the -10 to solve for "x".

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