2(x-y) = 8 when x = 6
Step 1 substitute 6 for the value of x in the equation
2(6-y) = 8
Step 2 Tidy this equation up now
(2 x 6)+ (2 x -y) = 8
12 -2y = 8
Step 3 Solve for y
12 -2y + 2y = 8 + 2y ..... Add 2y to both sides.
12 = 8 + 2y
12 - 8 = 8 - 8 + 2y ..... Subtract 8 from both sides
4 = 2y
4/2 = (2y)/2 ..... Divide both sides by 2
2 = y
Always check your answer!
If you substitute the value for x (6) and the value for y (2) into the original equation, is it true?
2(x-y) = 8
2(6-2)
2(4)
8 = 8 .... Equation is true, the value for Y is correct when X = 6
I hope this helps
Step 1 substitute 6 for the value of x in the equation
2(6-y) = 8
Step 2 Tidy this equation up now
(2 x 6)+ (2 x -y) = 8
12 -2y = 8
Step 3 Solve for y
12 -2y + 2y = 8 + 2y ..... Add 2y to both sides.
12 = 8 + 2y
12 - 8 = 8 - 8 + 2y ..... Subtract 8 from both sides
4 = 2y
4/2 = (2y)/2 ..... Divide both sides by 2
2 = y
Always check your answer!
If you substitute the value for x (6) and the value for y (2) into the original equation, is it true?
2(x-y) = 8
2(6-2)
2(4)
8 = 8 .... Equation is true, the value for Y is correct when X = 6
I hope this helps