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Lady_Fox [76]
3 years ago
15

X=2y-1 solve this equation 3x+y=11

Mathematics
1 answer:
Ugo [173]3 years ago
8 0

Step-by-step explanation:

substitute y into x

3(2y-1)+y=11

6y-3+y=11

add like terms

6y+y-3-11=0

7y-14=0

look for a common factor

7(y-2)=0

y-2=0

therefore y=0 or y=2

find x

if x=2y-1

x=2(0)-1

x=-1

if x=2y-1

x=2(2)-1

x=3

therefore (-1;0) and (3;2)

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109x is the expression that could be used to determine the total number of cupcakes made given that a parent made x cupcakes for each of the 109 students in the fourth grade. This can be obtained by forming the algebraic expression for the given conditions.

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Given that,

A parent made x cupcakes for each of the 109 students in the fourth grade.

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