Question

A) X+4=12 B) X+6=2X-12 C) 3X+4-X=2X+20 D)3A+4A=7 E) B+10= 5B+10+4 F) 2Y/4=10

Answer 1

Olá,

Vamos lá,

A) X+4=12
x =12- 4
x = 8


B) X+6=2X-12
2x - x = 6 +12
x = 18

C) 3X+4-X=2X+20
3x - x - 2x = 20 -4
0 = 16
equação inexistente


D)3A+4A=7
7a = 7
a = 7/7
a = 1


E) B+10= 5B+10+4
5b - b = 10-10-4
4b = -4
b= -4/4
b = -1

F) 2Y/4=10

2y = 10 * 4
2y= 40
y = 40/2
y = 20