21=1.4(x-5)

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Solution for 21=1.4(x-5) equation:


Simplifying
21 = 1.4(x + -5)

Reorder the terms:
21 = 1.4(-5 + x)
21 = (-5 * 1.4 + x * 1.4)
21 = (-7 + 1.4x)

Solving
21 = -7 + 1.4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1.4x' to each side of the equation.
21 + -1.4x = -7 + 1.4x + -1.4x

Combine like terms: 1.4x + -1.4x = 0.0
21 + -1.4x = -7 + 0.0
21 + -1.4x = -7

Add '-21' to each side of the equation.
21 + -21 + -1.4x = -7 + -21

Combine like terms: 21 + -21 = 0
0 + -1.4x = -7 + -21
-1.4x = -7 + -21

Combine like terms: -7 + -21 = -28
-1.4x = -28

Divide each side by '-1.4'.
x = 20

Simplifying
x = 20

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