Question

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

last option is correct

Explanation:

A step that could be used to find the solution is substitution.

We can directly substitute for c in equation F

Since c= 2d + 1 from equation E, we can substitute directly in equation F and we will have 2d + 1 = 3d + 7