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

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

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step-by-step explanation: