What would you do first to solve this problem? 7x4 [ (6+3) -4]

do whats in the parenthesis first

Step-by-step explanation:

so like this

7x^4[(6+3)-4]

7x^4[9-4]

7x^4+5

If brainiest is earned its greatly appreciated

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

a is the correct