89 + 12 = 101 kb nha

89 + 12 = 101

89+12=101

 12 x 6 + 12 x 3 + 12

= 12 x ( 6 + 3 + 1 )

= 12 x   10

=   120

 12 x (6+3+1)

=12 X 10

=120

12x6+12x3+12

=12x(6+3+1)

=12x10

=120

\(12+\frac{4}{12}\times6\)

\(=12+2\)

\(=14\)

\(12+\frac{4}{12}\cdot6=12+\frac{1}{3}\cdot6=12+\frac{6}{3}=12+2=14\)

\(12+\frac{4}{12}\cdot6\)

\(=12+2\)

\(=14\)

12 + 9.6 x 0,25

= 21,6 x 0,25

= 5,4

12+9.6x0.25=12+2.4=14.4

\(12+9,6\times0,25\)

=\(12+\left(9,6\times0,25\right)\)

=\(12+2,4\)

=\(14,4\)

12 + 23 - 13 x 4

= 35 - 52

= -23

12 + 23 - 13 × 4

= 35 - 52

= -23

\(-23\)\(nha\)

\(x+16\text{ × }12-12=178\)

\(x+192-12=178\)

\(x+192=178+12\)

\(x+192=190\)

\(x=190-192\)

\(x=-2\)

tinh rui la -2 do

Nho tk nha!!!!!!!!!!!!!!!!!!!!!!!!!!!

a)=-66/355

b)=-13/3

K cho với