Ben solved an equation as shown below, Equation 2 (-3×+1)=9×-8. what did he do wrong. step1. -6×+2=9×- 8. step2. -6×+9×=-8+2. st
ep3. 3x=-6. step4. x=-2
2 answers:
He just switched sides of the variables and numbers. Instead if adding the opposite.
failed to evaluate 9 × - 8
2( - 3x + 1) = 9 × - 8
- 6x + 2 = - 72 ( subtract 2 from both sides )
- 6x = - 74 ( divide both sides by - 6 )
x =
= 
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y = kx
from the info given k=2
hence when x=8 y=16:
You divide each cost to the package for A. to find the better price