Solve 7 + x - 15 = -2.2/3

5 1/3
10 2/3
20 2/3
6 1/3

5 1/3

Step-by-step explanation:

7+х-15= -2.2/3 7+(-15)=-8

-8+x= -2.2/3

-8+x= -8/3

x= -8/3+8

x= 16/3= 5 1/3

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b