Question

Encontre a soluçao das seguintes equaçoes com calculos porfavor :


A) 5 X - 40 = 60
B) 2 Y +43 =5
C) 3 X + 17 =11
D) 15 X = -45

Answer 1

A) 5x = 60 + 40
5x=100
x=100/5
x=20

B)2y= 5-43
2y=38
y=38/2
y=19

C)3x=11-17
3x=6
x=6/3
x=2

D)x=-45/15
x= -3 

Answer 2

A. 5x-40=60
5x=60+40
5x=100
x=100/5=20
b. 2y+43=5
2y=5-43
2y=-38
y=-38/2=-19
c. 3x+17=11
3x=11-17
3x=-6
x-6/3=-2
d. 15x=-45
x=-45/15=-3