sindy56 sindy56
  • 26-09-2018
  • Mathematics
contestada

Help solve these using the addition and multiplication properties of equality

Help solve these using the addition and multiplication properties of equality class=

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cmoreno511 cmoreno511
  • 01-10-2018

#19


-4/5x=8


-4(x)/5=8


-4x/5=8


Multiply both sides by


-4x=8(5)


-4x=40


Divide both sides by -4


X= -10


#21

-4/3x+5=7


Multiply both sides by 3


-4/3x(3)+5(3)=7(3)


-4x+15=21


-4x=21-15


-4x=6


X=6/-4


X=-3/2





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