4*(3x+5)+5*(9x-5)=20*(7+3x)
12x+20+45x-25=140+60x
-3x=145
x=145/3
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4*(3x+5)+5*(9x-5)=20*(7+3x)
12x+20+45x-25=140+60x
-3x=145
x=145/3