Question

18 into [7 + (-3 ) ] =(18 into (-3 ) ] verify

Answer 1

Answer:

Step-by-step explanation:

.    18 × [7-3] = 126 + [-54]        (+×- = -)

      18 × 4 = 126-54

      72 = 72

   therefore lhs = rhs

b.     21×[-10] = [84]+[126]             ( -×- = +)

      -210 =/= 210

   therefore lhs =/= (is not equal to) rhs

Answer 2

18[7+(-3)]=18(-3)

lhs:

18×7(-3)=126-3

=123

rhs:

18[-3]

=-54

therefore lhs≠rhs