Question

vaaaaaaaaaaaaa roooooooog urgent

Answer 1

a) -4.5x+5/18=0=>5/18-4.5x=0=>5/18-(9x)/2=0=>5/18-81x/18=0=>(5-81x)/18=0
=>5-81x=0=>81x=5=>x=5/81=>x=5/9²
b)1intreg 5/8x-8/21=0=>(13/8)x-8/21=0=>(273x)/168-64/168=0=>(273x-64)/168=0
=>273x-64=0=>273x=64=>x=64/273
c) -8.4x-7.5=0=>(-42/5)x-15/2=0=>-75/10-84x/10=0=>(-75-84x)/10=0
=>-75-84x=0=>-84x=75=>x=-25/28
d) 3intreg 5/8x-12.3=7.4=>29x/8-123/10=37/5=>145x/40-492/40=37/5=>
=>(145x-492)/40=37/5=>145x-492=296=>145x=788=>x=788/145
e) 49x-54=37x=>54=49x-37x=>54=12x=>x=54/12=9/2=4.5