Question

A set of equations is given below:

Equation E: c = 2d + 1
Equation F: c = 3d + 7

Which statement describes a step that can be used to find the solution to the set of equations?

Equation F can be written as c = 3(c − 1) + 7.
Equation F can be written as c = 2(c − 7) + 1.
Equation F can be written as d + 1 = 3d + 7.
Equation F can be written as 2d + 1 = 3d + 7.

Answer 1

will give medals

Answer 2

what do you think which one is correct answer

Answer 3

i dont know i think d

Answer 4

put 2d+1 of equation E at the place of 'c' in equation F

Answer 5

so it is d

Answer 6

thx