What is the solution to the system of equations?

Use the linear combination method.

{2x+5y=4
3x−4y=29

Enter your answer in the boxes.

[7, - 2]

Step-by-step explanation:

The system of simultaneous linear equations is expressed as

2x + 5y = 4- - - - - - - - - - - - - 1

3x - 4y = 29- - - - - - - - - - - - - 2

We would eliminate x by multiplying equation 1 by 3 and equation 2 by 2. It becomes

6x + 15y= 12 - - - - - - - - - - - - 3

6x - 8y = 58- - - - - - - - - - - - 4

Subtracting equation 4 from equation 3, it becomes

23y = - 46

Dividing the left hand side and the right hand side of the equation by 23, it becomes

23y/23 = - 46/23

y = - 2

Substituting y = - 2 into equation 1, it becomes

2x + 5 × - 2 = 4

2x - 10 = 4

2x = 10 + 4

2x = 14

Dividing the left hand side and the right hand side of the equation by 2, it becomes

2x/2 = 14/2

x = 7

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

don't know what that says sorry i can't you

step-by-step explanation:

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