2.1=1.3*x+7

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Solution for 2.1=1.3*x+7 equation: 


Simplifying
2.1 = 1.3x + 7

Reorder the terms:
2.1 = 7 + 1.3x

Solving
2.1 = 7 + 1.3x

Solving for variable 'x'.

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

Add '-1.3x' to each side of the equation.
2.1 + -1.3x = 7 + 1.3x + -1.3x

Combine like terms: 1.3x + -1.3x = 0.0
2.1 + -1.3x = 7 + 0.0
2.1 + -1.3x = 7

Add '-2.1' to each side of the equation.
2.1 + -2.1 + -1.3x = 7 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -1.3x = 7 + -2.1
-1.3x = 7 + -2.1

Combine like terms: 7 + -2.1 = 4.9
-1.3x = 4.9

Divide each side by '-1.3'.
x = -3.769230769

Simplifying
x = -3.769230769

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