2.1=6.9-0.8x

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Solution for 2.1=6.9-0.8x equation:


Simplifying
2.1 = 6.9 + -0.8x

Solving
2.1 = 6.9 + -0.8x

Solving for variable 'x'.

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

Add '0.8x' to each side of the equation.
2.1 + 0.8x = 6.9 + -0.8x + 0.8x

Combine like terms: -0.8x + 0.8x = 0.0
2.1 + 0.8x = 6.9 + 0.0
2.1 + 0.8x = 6.9

Add '-2.1' to each side of the equation.
2.1 + -2.1 + 0.8x = 6.9 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + 0.8x = 6.9 + -2.1
0.8x = 6.9 + -2.1

Combine like terms: 6.9 + -2.1 = 4.8
0.8x = 4.8

Divide each side by '0.8'.
x = 6

Simplifying
x = 6

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