Question

Qual o valor de X?
A) 4T+9=3T+5
B) -10+4-2x= -4x-7
C)10x-8-2=7x-4

Answer 1

a)
4t + 9 = 3t + 5
4t - 3t = 5 - 9
t= - 4

b)

-10 + 4 -2x= -4x -7
-2x + 4x= -7 +10 -4
2x= -1
x= -1/2

c)

10x-8-2=7x -4
10x-7x=-4+8+2
3x=6
x=6/3 ÷ 3 = 2
x= 2

Bons estudos :D

Answer 2

A)4 T + 9 = 3 T + 5
4 T - 3 T = 5 - 9
T = - 4
B)-10  + 4 - 2 X = -4 X - 7
      -6 - 2 X  = -4 X - 7
-2 X + 4 X = - 7 + 6
2 X = -1
X = -1/2
C)10 X - 8 - 2 = 7 X - 4
10 X - 7 X  - 10 = - 4 
3 X = -4 + 10
3 X = 6
X = 6/3
X = 2