Question

Kira is solving the equation 3(2x + 5) - (5x - 2) = 42. Her steps are shown below.

Step 1: 6x + 15 - (5x - 2) = 42
Step 2: 6x + 15 - 5x - 2 = 42
Step 3: x + 15 – 2 = 42
Step 4: x + 13 = 42
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D) 2.
In which step does a mistake first appear?
D.
CLEAR AL
help ?

Answer 1

D) 2

Explanation:

Answer 2

D)2

the minus sign outside the bracket when multiplied by a negative number in the bracket is equal to a positive number