Q:

SUPER URGENT!!!!!!!!!!!!!NEED ANSWERED NOW!!!! PLS!!!Use the linear combination method to solve the system of equations. Explain each step of your solution.3x-8y=7" "" " x+2y=-7

Accepted Solution

A:
The solution of the system of equations is (-3 , -2) Step-by-step explanation:Let us revise the steps of Linear combinations methodArrange the equations with like terms in columnsmake the coefficients of x or y equal in magnitudes and different in signsAdd the equations and solve for the remaining variableSubstitute the value of the variable into one of the two equations to find the second variableThe system of equations is3 x - 8 y = 7 ⇒ (1)x + 2 y = -7 ⇒ (2)Let us make the coefficients of y equal in magnitude by multiplyingequation (2) by 4∴ 4 x + 8 y = -28 ⇒ (3)- Add equations (1) and (3) to solve for x∴ 7 x = -21- Divide both sides by 7∴ x = -3Substitute the value of x in equation (1) to find y∵ 3(-3) - 8 y = 7∴ -9 - 8 y = 7- Add 9 to both sides∴ -8 y = 16- Divide both sides by -8∴ y = -2The solution of the system of equations is (-3 , -2) Learn more:You can learn more about the system of the linear equations in brainly.com/question/2115716#LearnwithBrainly