. Solve for the given variable.
a. 4y + 3 = 19

b. 12n - 3 = 5

(a) 4

(b) 2/3

Step-by-step explanation:

(a) 4y+3=19

4y=19-3

4y=16

y=4

(b) 12n-3=5

12n=5+3

12n=8

n=8/12

n=2/3

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

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.