0.20(4)+0.30(9)=3.50

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Solution for 0.20(4)+0.30(9)=3.50 equation: 


Simplifying
0.20(4) + 0.30(9) = 3.50

Multiply 0.20 * 4
0.8 + 0.30(9) = 3.50

Multiply 0.30 * 9
0.8 + 2.7 = 3.50

Combine like terms: 0.8 + 2.7 = 3.5
3.5 = 3.50

Add '-3.5' to each side of the equation.
3.5 + -3.5 = 3.50 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 = 3.50 + -3.5

Combine like terms: 3.50 + -3.5 = 0.00
0.0 = 0.00

Solving
0.0 = 0.00

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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