Which of the following equations is written in standard form?

a
y = 4x + 8
b
5x + 4y = 12
c
2x = 3y - 9
d
x = y - 8

The correct answer is B. 5x + 4y = 12

Step-by-step explanation:

Standard form equations are written Ax+ By = C, and with the numbers plugged into the coefficients, it would like 5x+ 4y = 12. So B is correct.

27/4x^6 y^8

step-by-step explanation:

4(3x^2y^4)^3 (2x^3y^5)^4

=

108x^6 y^12 /16x^12 y^20

=

108 /16x^6 y^8

=

27 /4x^6 y^8