13r+10=5r-46 r=
r = -7
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3r+10=5r-46 --> add 46 to both sides 3r+10+46=5r-46+46 3r+56=5r --> subtract 3r from both sides 3r+56-3r=5r-3r 56=2r --> divide both sides by 2 56/2=2r/2 28=r
10 10 10 10
240-10=5x 5x=230 230/5=46 x=46
46 + 29 = 75
-46 = 3x + 7x