Answer: x=738
Step-by-step explanation: Let's solve your equation step-by-step.
x /30 = 123 /5
Step 1: Cross-multiply.
x /30 = 123/5
x*(5)=(123)*(30)
5x=3690
Step 2: Divide both sides by 5.
5x /5 = 3690 /5
x=738