Answer:
-14
Step-by-step explanation:
The sum (addition) of the three numbers would be -14 because -12+-5 is -17. Then, -17+3 would be -14.
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Answer:
Martha is 29
Step-by-step explanation:
48=AX+MX+10
-10=-10
38=AX+MX
÷2=÷2
19=X
M(19)+10=29
48=19+29
For this case we have the following expressions:

For 

For 

For
:

For any number, the expressions will be equivalent because 
ANswer:
and
have the same value for b = 1,2,3
Answer:
Answer:
x + 2y = 2
x - 2y = -2
2x = 0
x = 0
0 + 2y = 2
2y = 2
y = 1
(0, 1)
Step-by-step explanation:
consistent and independent