Question

(2+3+4)x 10= 20+30+____

Answer 1

Answer:

(2+3+4)x 10= 20+30+____

Answer is 40

Answer 2

Answer:

(2+3+4)×10=20+30+a

=> (9)×10=20+30+a

=> 90=50+a

=> a=90-50

=> a=40

hope it helps to you