Question

aiuda (ecuaciones) 40 = 5 b) X mas 2X mas 24 = 76 c) -45X mas 20 = 12 - X
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Answer 1

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5x=40
x=8
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x+2x+24=76
3x+24=76
3x=76-24
x=52÷3
          _
x=17.3
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-45x+20=12-x
20-12=-x+45x
         8     =  44x
              x= 8/44
             x=2/11
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Answer 2

x+2x+24=76=3x=76-24=3x=52=x=52/3=17,33 -45x+20=12-x=-45x+x=12-20=-44x=-8=x-8/-44=x=2/11