Please help me with #4, #10, and #16. I am having trouble woth these. Please show your work so that I may better understand the process.© BrainMass Inc. brainmass.com March 4, 2021, 5:51 pm ad1c9bdddf
So let us see how to solve equations by the method of substitution.
The substitution method is used to eliminate one of the variables by replacement when solving a system of equations.
Think of it as "grabbing" what one variable equals from one equation and "plugging" it into the other equation.
2x + 7y = 4 ...(1)
x + 3y = 1.....(2)
we can write 2 as, x = 1 - 3y ...
Clear explanations and all mathematical steps are provided. The methods of substitutions are given.