4.2=2.9+v

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Solution for 4.2=2.9+v equation:


Simplifying
4.2 = 2.9 + v

Solving
4.2 = 2.9 + v

Solving for variable 'v'.

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

Add '-1v' to each side of the equation.
4.2 + -1v = 2.9 + v + -1v

Combine like terms: v + -1v = 0
4.2 + -1v = 2.9 + 0
4.2 + -1v = 2.9

Add '-4.2' to each side of the equation.
4.2 + -4.2 + -1v = 2.9 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + -1v = 2.9 + -4.2
-1v = 2.9 + -4.2

Combine like terms: 2.9 + -4.2 = -1.3
-1v = -1.3

Divide each side by '-1'.
v = 1.3

Simplifying
v = 1.3

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