Question

3+6+9+12+__+45=3(1+2+__+15)
=3×__=__

Give a clear step by step xplntion​

Answer 1

Step-by-step explanation:

1. 3+6+9+12+15+45=3
2. (1+2+12+15)=3
3. 3×__=__

Answer 2

Step-by-step explanation:

3+6+9+12+ 15 +45=3(1+2+12+15)=3×30=90