Hey there!
30(x - 10) = 15x
30(x) + 30(-10) = 15x
30x - 300 = 15x
SUBTRACT 15x to BOTH SIDES
30x - 300 - 15x = 15x - 15x
SIMPLIFY IT
15x - 300 = 0
ADD 300 to BOTH SIDES
15x - 300 + 300 = 0 + 300
CANCEL out: -300 + 300 because it gives you 0
KEEP: 0 + 300 because it helps solve for the x-value
NEW EQUATION: 15x = 0 + 300
SIMPLIFY IT!
15x = 300
DIVIDE 15 to BOTH SIDES
15x/15 = 300/15
CANCEL out: 15/15 because that gives you 1
KEEP: 300/15 because it helps solve for the x-value
NEW EQUATION: x = 300/15
SIMPLIFY IT!
x = 20
Therefore, your answer is: x = 20
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
