Super i need ! 1 ! use the linear combination method to solve the system of equations. explain each step of your solution. 3x-8y=7" " " " x+2y=-7

x=-3,y=-2

Step-by-step explanation:

Given 2 expressions

S1:

S2:

Write one equation in terms of any variable (x or y)

Here I am writing S1 in terms of y

Substitute this value of y as the value of y in S2

⇒

Therefore

Substitute this value of x in any of the expressions S1 or S2

Here i am substituting in S2

⇒

Therefore x=-3 and y=-2

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⭐

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: