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.2(4k+3)-13=2(18-k)-13
We move all terms to the left:
.2(4k+3)-13-(2(18-k)-13)=0
We add all the numbers together, and all the variables
.2(4k+3)-(2(-1k+18)-13)-13=0
We multiply parentheses
0.8k-(2(-1k+18)-13)+0.6-13=0
We calculate terms in parentheses: -(2(-1k+18)-13), so:We add all the numbers together, and all the variables
2(-1k+18)-13
We multiply parentheses
-2k+36-13
We add all the numbers together, and all the variables
-2k+23
Back to the equation:
-(-2k+23)
0.8k-(-2k+23)-12.4=0
We get rid of parentheses
0.8k+2k-23-12.4=0
We add all the numbers together, and all the variables
2.8k-35.4=0
We move all terms containing k to the left, all other terms to the right
2.8k=35.4
k=35.4/2.8
k=12+1/1.5555555555556
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