Hello from MrBillDoesMath!
Answer: x 37.2
Discussion:
3x + 7(x-18) = 246 =>
3x + 7x - 7*18 = 246 =>
10x - 126 = 246 =>
10x = 246+ 126 = 372 =>
x = 37.2
Thank you,
MrB
