Answer:
1. 27
2. 8
3. 18
Step-by-step explanation:
1. multiply 9 and 30(9×30=270) then divide 270 and 10(270÷10=27) and the answer is 27
2. multiply 30 and 4(30×4=120) then divide 120 and 15(120÷15=8) and the answer is 8
3. multiply 15 and 6(15×6=90) then divide 90 and 5(90÷5=18) and the answer is 18