Seudónimo Seudónimo

19-06-2020
Mathematics

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Given the equation below what is the value of a+b?
1/2(a+3)-b=-6
3a-2b=-5

Respuesta :

mhanifa mhanifa

19-06-2020

Answer:

15

Step-by-step explanation:

1. 1/2(a+3)-b=-6 ⇒ a+3-2b= -12 ⇒ a-2b= -15

2. 3a-2b= -5

subtract the equations to eliminate 2b:

3a+5= a+15
2a= 10
a= 5

then

b= 10

then

a+b= 5+10= 15

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