posted by carol on .
use the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this 3x + 24y = 24s,27x – 15y = -15 .
3x + 24y = 24
27x – 15y = -15
Divide first equation by 3.
x + 8y = 8
Transpose y term.
x = 8 - 8y
Substitute 8-8y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.
solve for x in the first equation.
put that in the second equation
solve for y
Then put that y back into the first equation, solve for x.