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5.30x+2.50x+3=55.20
We move all terms to the left:
5.30x+2.50x+3-(55.20)=0
We add all the numbers together, and all the variables
5.30x+2.50x+3-(55.2)=0
We add all the numbers together, and all the variables
7.8x-52.2=0
We move all terms containing x to the left, all other terms to the right
7.8x=52.2
x=52.2/7.8
x=6+3.8571428571428/5.5714285714285
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