Mathematics: 4 + 3r - 5r = -4r + 4

4 + 3r - 5r = -4r + 4 - id435447825589, mooncake9090

Ответ:

alejandra216

03.02.2022

r =0

Step-by-step explanation:

$4 + 3r - 5r = -4r + 4\\\\\mathrm{Subtract\:}4\mathrm{\:from\:both\:sides}\\4+3r-5r-4=-4r+4-4\\\\Simplify\\3r-5r=-4r\\\\\mathrm{Add\:similar\:elements:}\:3r-5r=-2r\\-2r=-4r\\\\\mathrm{Add\:}4r\mathrm{\:to\:both\:sides}\\-2r+4r=-4r+4r\\\\Simplify\\2r=0\\\\\mathrm{Divide\:both\:sides\:by\:}2\\\frac{2r}{2}=\frac{0}{2}\\\\Simplify\\r=0$

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4 + 3r - 5r = -4r + 4

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