contestada

.Given: 3(x-4)=2x+7
Prove: x=19


PROOF:

Statements Reasons
a. 3(x−4)=2x+73(x−4)=2x+7 a. Given
b. 3x−12=2x+73x−12=2x+7 b. ?
c. ? c. Subtraction Property
d. x=19 d. ?
which statment b c and d

Respuesta :

Explanation:

3(x-4)=2x+7

⇔

3x - 12 = 2x + 7  (expand the left expression)

⇔

3x - 2x - 12 = 2x - 2x + 7  (subtract 2x from both sides)

⇔

x - 12 = 7

⇔

x - 12 + 12 = 7 + 12   (Add 12 to both sides)

⇔

x = 19

Otras preguntas