Respuesta :

MQB14

Answer:

10

Step-by-step explanation:

40=2a-3+2a+3a+1

add like terms

  • 40=7a-2

get 'a' by its self

  • 40(+2)=7a-2(+2) [2 cancels out]
  • 42(÷7)=7a(÷7) [7 cancels out]
  • a=6

plug in the answer for Equations

  • biggest: 3(6)+1= 18+1= 19
  • smallest: 2(6)-3= 12-3=9

subtract smallest from biggest

  • 19-9=10

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