Question

I need answers medal and fan

A set of equations is given below:

Equation E: a = 5b + 1
Equation F: a = 3b + 4

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

Equation F can be written as 5b + 1 = 3b + 4.
Equation F can be written as b + 1 = 3b + 4.
Equation F can be written as a = 3(a − 1) + 4.
Equation F can be written as a = 5(a − 4) + 1.

I don't understand what it is asking me

Answer 1

This is a system of equations...Both equations can be set equal to each other since they're both equal to "a" So what do you think? :)

Answer 2

that is unfortunately not what the question is asking

Answer 3

KamiBug gave a pretty good hint for what the first step could be.

Answer 4

Lizzy, lost?

Answer 5

substitute for a in equation F
Equation E gives the value of a in terms of b

Answer 6

a simple example is

a = 5b
a = 3b + 2

so we can substitute for a in the second equation:-

5b = 3b + 2

Answer 7

its quite easy really
if both 5b and 3b + 2 is equal to a
then 5b must equal 3b + 2

Answer 8

so apply this reason to your question

Answer 9

I think I'm lost in numbers

Answer 10

the above is very close to your question - only the numbers and terms in x are different

Answer 11

this question is a bit difficult, but they want you to remember
"solve by substitution"

if you have
Equation E: a = 5b + 1
Equation F: a = 3b + 4

the idea is "substitute" a with the "complicated version"
For example, if we start with equation F
a = 3b + 4

we replace "a" with its equivalent (from the *other equation*) 5b+1

Answer 12

ok I think I get it

Answer 13

good!!