Question

-4x+7= 15
El valor de x para la ecuación es:

a) -8
b) 6
c) 2
d)-2

Answer 1

-4x+7 = 15

-4x = 15-7

-4x = 8

x = 8/-4

x = 2/-1

x = 2×(-1)/-1×(-1)

x = -2/1

x = -2

Option (Đ) -2 is the answer of this question.

Answer 2

Answer:

Step-by-step explanation:

4x+7 = 15

-4x = 15-7

-4x = 8

x = 8/-4

x = 2/-1

x = 2×(-1)/-1×(-1)

x = -2/1

x = -2  

Option (Đ) -2 is the answer of this question.