Question

Question 1-4

Each step in a procedure to solve this equation is shown
Equation: 5x - 7 = 3(x + 1)
Step 1: 5x - 7 = 3x + 3
Step 2: 2x-7 = 3
Step 3: 2x =-4
Step 4: x = -2
In which step is the first error made?
.
from the original equation to step 1
from step 1 to step 2
from step 2 to step 3
O from step 3 to step 4

Answer 1

step 2 to step 3

Explanation:

step 2

2x - 7 = 3 ( add 7 to both sides )

2x = 10 ( error was made here in that they had - 4 )