<u>1.6y+y-4/15y+7/6y=21/3</u>
<u></u>
<u>We move all terms to the left:</u>
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<u>1.6y+y-4/15y+7/6y-(21/3)=0</u>
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<u></u>
<u>Domain of the equation: 15y!=0</u>
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<u>y!=0/15</u>
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<u>y!=0</u>
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<u>y∈R</u>
<u>Domain of the equation: 6y!=0</u>
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<u>y!=0/6</u>
<u></u>
<u>y!=0</u>
<u></u>
<u>y∈R</u>
<u></u>
<u></u>
<u>We add all the numbers together, and all the variables</u>
<u></u>
<u>1.6y+y-4/15y+7/6y-7=0</u>
<u></u>
<u>We add all the numbers together, and all the variables</u>
<u></u>
<u>2.6y-4/15y+7/6y-7=0</u>
<u></u>
<u>We calculate fractions</u>
<u></u>
<u></u>
<u>2.6y+(-24y)/90y^2+105y/90y^2-7=0</u>
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<u>We multiply all the terms by the denominator</u>
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<u></u>
<u>(2.6y)*90y^2+(-24y)+105y-7*90y^2=0</u>
<u></u>
<u>We add all the numbers together, and all the variables</u>
<u></u>
<u>(+2.6y)*90y^2+(-24y)+105y-7*90y^2=0</u>
<u></u>
<u>We add all the numbers together, and all the variables</u>
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<u>105y+(+2.6y)*90y^2+(-24y)-7*90y^2=0</u>
<u></u>
<u>Wy multiply elements</u>
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<u>-630y^2+105y+(+2.6y)*90y^2+(-24y)=0</u>
<u></u>
<u>We get rid of parentheses</u>
<u></u>
<u>-630y^2+105y+(+2.6y)*90y^2-24y=0</u>
<u></u>
<u>We add all the numbers together, and all the variables</u>
<u></u>
<u>-630y^2+81y+(+2.6y)*90y^2=0</u>
<u></u>
<u>Hoped this helped :)</u>
