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8x+7=55 8x=55-7 8x=48 x=48/8 x=6
6
8x plus 4y equals 5 is 8x + 4y = 5.
-8x + 3 = 251 -8x = 251 - 3 -8x = 248 -x = 248 ÷ 8 -x = 31 x = -31
7y+ 8x + 4= 20 + 8x- 8x - 8x7y + 4 = 20- 4 - 47y=16/7 /7y= 2.28the /7 means divide by 7 :)