Question

Which would you use to solve the equation? Check all that apply.

12.7 = j – 3.4

Subtract 3.4 from both sides of the equation.
Add 3.4 to both sides of the equation.
12.7 + 3.4 = 16.1, so j = 16.1.
12.7 – 3.4 = 9.3, so j = 9.3.
Substitute 9.3 for j to check the solution.
Substitute 16.1 for j to check the solution.

Answer 1

Step-by-step explanation:

a) Subtracting 3.4 from both the sides -

12.7 = j - 3.4

12.7 - 3.4 = j - 3.4 - 3.4

9.3 = j - 6.8

j = 9.3 + 6.8 = 16.1

b) Adding 3.4 to both sides of the equation -

12.7 = j - 3.4

12.7 + 3.4 = j - 3.4 + 3.4

j = 12.7 + 3.4 = 16.1

c) Substituting 9.3 for j

12.7 = j - 3.4

12.7 = 9.3 - 3.4 = 5.9

12.7 ≠ 5.9

d) Substituting 16.1 for j

12.7 = j - 3.4

12.7 = 16.1 - 3.4

12.7 = 12.7

Answer 2

Answer:

B,C,F

Step-by-step explanation: