1.

21If 8x + == 3x + 7 then the value of xy.(b) 70(c) 1(d) in t.

Answer»

8x+21/4=3x+732x+21=12x+2820x=7x=7/20

8x - 3x = 7 - 21/4; 5x = 7(4) - 21/4; 5x = 28 - 21/4; 5x = 7/4; x = 7/20



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