Find the values for a and b that would make the following equation true. (ax^3)(3x^b) = 21x^4
a =
b=

Find the values for a and b that would make the following equation true.

(ax^3)(3x^b) = 21x^4

a =

b=

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

just keep asking questions until you have a better understanding.

step-by-step explanation: