Distributif dari 5 x (10-8) 9×(8+10)=... Tolonglah dgn jlnnya y jelas agar dimengerti trims

5×(10-8) = ( 5×10) - ( 5×8) = 50 - 40 = 10
9×(8+10) = ( 9×8 ) + ( 9×10) = 72 +90 =162

a × ( b-c ) = ( a×b ) - ( a×c )
5× ( 10-8) = ( 5×10 ) - ( 5×8 )
= 50 - 40
= 10

a × ( b+c ) = ( a×b ) + ( a×c )
9× ( 8+ 10) = (9×8) + (9×10)
= 72 + 90
= 162