Question

Verify the following. (II) (-21) x[(-6)+(-4)]=(-21)x(6)+(-21)x4

Answer 1

Answer:

remember the following.

• (+)+(+)=+ sum of digit
• (+)+(-)=sign of the greater digit but the no. is substract.
• (+)-(+)=same as above.
• (-)+(-)=sign is minus but the nos. are added FOR MULTIPLICATION
• (+)*(+)=multiplication of the no. and sign of plus
• (+)*(-)=multiplication of the no. but minus sign
• (-)*(-)=multiplication of no. but plus sign