2 years ago

Answer pleaseeeeeeeeeee

Mathematics

2 answers:

MrRa [10]2 years ago

7 0

Answer:

I think you have the right answers looks like to me you do.

Step-by-step explanation:

Radda [10]2 years ago

7 0

The answer you put is right

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the ages of John and Mary total 27 years. Mary's age plus twice john's age is 40. how old is each person?

son4ous [18]

So
Jon's age=j
mary age=m

m+j=27
m+2 times j=40
m+2j=40
M+j=27
ssubtract j from both sides
m=27-j
subsitute 27-j for m
27-j+2j=40
27+j=40
subtract 27 fromboth sdies
j=13

subsitue
13+m=27
subtract 13
m=14

mary=14
john=13

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Given :

x + y = 4
x + y = 1

To Find :

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x + y = 1......[Equation (ii)]

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