Question 127961
The problem to solve is: 
6.3X + 1.2Y- 3.2X+5.4 + 4.3Y 


Multiply X and 6.3 
Multiply X and 1 


The X just gets copied along. 

The answer is X 

X 

6.3*X evaluates to 6.3X 

Multiply Y and 1.2 

Multiply Y and 1 


The Y just gets copied along. 

The answer is Y 

Y 

1.2*Y evaluates to 1.2Y 

6.3*X+1.2*Y evaluates to 6.3X+1.2Y 

Multiply X and 3.2 

Multiply X and 1 


The X just gets copied along. 

The answer is X 

X 

3.2*X evaluates to 3.2X 

6.3X - 3.2X = 3.1X 

The answer is 3.1X+1.2Y 

6.3*X+1.2*Y-3.2*X evaluates to 3.1X+1.2Y 

The answer is 3.1X+1.2Y+5.4 

6.3*X+1.2*Y-3.2*X+5.4 evaluates to 3.1X+1.2Y+5.4 

Multiply Y and 4.3 

Multiply Y and 1 


The Y just gets copied along. 

The answer is Y 

Y 

4.3*Y evaluates to 4.3Y 

1.2Y + 4.3Y = 5.5Y 

The answer is 5.5Y+3.1X+5.4 

6.3*X+1.2*Y-3.2*X+5.4+4.3*Y evaluates to 5.5Y+3.1X+5.4 



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The final answer is 5.5Y+3.1X+5.4