Steps for solving 6x - 18 = 54 are shown.
Explain how Step 1 helps solve the equation.
6x - 18 = 54
6x -18 +18 = 54 +18
6x = 72
6x 72
66
x = 12
Original equation
Step 1
Step 2
Step 3
Step 4
O
A. Adding 18 to both sides isolates the variable term.
O
B. Subtracting 18 from both sides combines like terms.
O
C. Adding 18 to both sides isolates the variable.
O
D. Subtracting 18 from both sides undoes the subtraction.

In order to find the solution of a linear equation we have to isolate the variable term on one side of the equation. For this we should remember that if an operation is performed on one side of the equation it should be applied on other side too.

So,

In the given sequence of steps we can see that when we add 18 on both sides the 18 on left side of equation is cancelled out and on right side it is added to 54

[tex]6x-18 = 54\\6x-18+18 = 54+18\\6x = 72[/tex]

We can see that adding 18 only makes the term 6x isolated so

The correct answer is:

Option A: Adding 18 to both sides isolates the variable term

Keywords: Linear equation, variables

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aleaxandracontreras0 aleaxandracontreras0 · Answer 2 · 2021-08-12T06:06:15+02:00

aleaxandracontreras0 aleaxandracontreras0

12-08-2021

Answer:

A

Step-by-step explanation:

A P E X

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