Ask a New Question

Asked by Rose

solve the system by the method of substitution

x-4y=-21
3x+y=2

I got (0,2)

Try plugging in x=0 and y=2 into your first equiation and uopu will that your answer must be wrong.

Do it this way:

x - 4y =-21
12x+ 4y =8

13 x = -13
x = -1
y = 2 - 3x = ?

x=0 and y=2 does not satisfy the first equation.
(0)-4(2)=0-8=-8 but that isn't equal to -21.
18 years ago

Answers

Related Questions

Solve the system by the method of your choice. Identify systems with no solutions and systems with i... Solve system by method of elimination 0.07x + 0.02y =-0.07 0.08x - 0.06y = 0.07 Solve the system by the method of your choice. Identify systems with no solution and systems with in... Solve by whatever method you would prefer. (Leave answers as improper fractions) 3x + 2y = -10 2... Which method of solving system of equations should I use for this equation, and what is the answer?... What system, process, or methods were used to sell or exchange goods for these countries to make mon... Which method will solve this equation completely? 16 – 9f = 47 CLEAR CHECK Add 16 to both... Which method will NOT solve this equation completely? 4h – 7 = 25 CLEAR CHECK Add 7 to bo... Which method will NOT solve this equation completely? -8 + 3y = 19 CLEAR CHECK Add 8 to b... Which method will solve this equation completely? 5 – 8d = 16 CLEAR CHECK Add 5 to both s...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use