Solving Systems of Linear Equations by Multiplication and Addition Method

8x+3y=-21
4x+5y=-7

© SolutionLibrary Inc. solutionlibary.com 9836dcf9d7 https://solutionlibrary.com/math/algebra/solving-systems-of-linear-equations-by-multiplication-and-addition-method-1u0

Solution Preview

...s in both equations, the same.
Multiplying the equations
So let us multiply equation (2) by 2. We get
8x + 10y = -14......(3) [equation 2 is multiplied by 2 on the left and right hand side]
Now multiply equation (1) by -1. We get
- 8x - 3y = 21......(4) [equation 1 is multiplied by 2 on the left and right hand side]
Adding the equations for eliminating 'x'
Now add ...