SOLUTION: Sir / Ma'am .. i don't know how to check this using substitution method .. it only needs to be checked.. here the problem : 4x+y+1 over 2 =14

Question 465170: Sir / Ma'am .. i don't know how to check this using substitution method .. it only needs to be checked.. here the problem :
4x+y+1 over 2 =14

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

to check this using substitution method, you need and values ...plug them in your equation and if the left side of equation is equal to the right side and values are solutions.
I will take for and and check if these values are solutions:

using substitution method we have

.......... the left side of equation is NOT equal to the right side and values are NOT solutions.

now, I will take for and and check if these values are solutions:

using substitution method we have

.......... the left side of equation IS equal to the right side and values ARE solutions.

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