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2.1(8.7-6.3x)=-9.5-12.4
We move all terms to the left:
2.1(8.7-6.3x)-(-9.5-12.4)=0
We add all the numbers together, and all the variables
2.1(-6.3x+8.7)-(-21.9)=0
We add all the numbers together, and all the variables
2.1(-6.3x+8.7)+21.9=0
We multiply parentheses
-12.6x+18.27+21.9=0
We add all the numbers together, and all the variables
-12.6x+40.17=0
We move all terms containing x to the left, all other terms to the right
-12.6x=-40.17
x=-40.17/-12.6
x=3+1/5.3164556962
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