Dry up spec variables

spec/helpers/check_answers_helper_spec.rb

@@ -1,11 +1,11 @@
 require "rails_helper"
 
 RSpec.describe CheckAnswersHelper do
-  describe "Get answered questions total" do
-    let!(:case_log) { FactoryBot.create(:case_log) }
-    @form = Form.new(2021, 2022)
-    subsection_pages = @form.pages_for_subsection("income_and_benefits")
+  let(:case_log) { FactoryBot.create(:case_log) }
+  let(:form) { Form.new(2021, 2022) }
+  let(:subsection_pages) { form.pages_for_subsection("income_and_benefits") }
 
+  describe "Get answered questions total" do
     it "returns 0 if no questions are answered" do
       expect(get_answered_questions_total(subsection_pages, case_log)).to equal(0)
     end
@@ -17,10 +17,6 @@ RSpec.describe CheckAnswersHelper do
   end
 
   describe "Get total number of questions" do
-    let!(:case_log) { FactoryBot.create(:case_log) }
-    @form = Form.new(2021, 2022)
-    subsection_pages = @form.pages_for_subsection("income_and_benefits")
-
     it "returns the total number of questions for a subsection" do
       expect(get_total_number_of_questions(subsection_pages)).to eq(4)
     end