Question

3-Determine o valor de X nas equações seguintes:

A)5x+3=23
B)-3x+16=4
C)7x-9=-23
D)11x+5=-28​

Answer 1

A) 5x+3=23

5x= 23-3

5x= 20

x=20÷5

X=4

B) -3x+16=4

-3x=4-16

-3x= -12

x= -12÷(-3)

X= -4

C)7x-9= -23

7x= -23-9

7x= -14

x= -14÷7

X= -2

D)11x+5= -28

11x= -28-5

11x= -33

x= -33÷11

X= -3