1) Solving this equation, we can write:
0.6x+2.7=0.9x Subtract 0.9x from both sides
0.6x -0.9x +2.7=0
-0.3x +2.7 =0 Subtract 2.7 from both sides
-0.3x =-2.7 Divide by -1
0.3x = 2.7 Divide both sides by 0.3
x =9
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