Respuesta :
Answer:
1. 7x + 5 = 19
7x = 14
x = 2
2. 4x - 12 = 2x - 4
2x - 12 = -4
2x = 8
x = 4
Answer:
x = 2 and x = 4
Step-by-step explanation:
(1)
3x + 5 = 19 - 4x ( add 4x to both sides )
7x + 5 = 19 ( subtract 5 from both sides )
7x = 14 ( divide both sides by 7 )
x = 2
(2)
4(x - 3) = 2(x - 2) ← distribute parenthesis on both sides
4x - 12 = 2x - 4 ( subtract 2x from both sides )
2x - 12 = - 4 ( add 12 to both sides )
2x = 8 ( divide both sides by 2 )
x = 4