Question

determine o valor de x: 2× + 8= 3x+ 7. b 5x +10 = 2x +14 c 4x - 3= x+2 d 2x+5=x+8​

Answer 1

a.
2x + 8 = 3x + 7
2x - 3x = 7 - 8
-x = -1
-x (.-1) -1(.-1)
x=1
b.
5x + 10 = 2x + 14
5x - 2x = 14 - 10
3x = 4
x= 4/3
c.
4x - 3 = x + 2
4x - x = 2 + 3
3x = 5
x = 5/3
d.
2x + 5 = x + 8
2x - x = 8 - 5
x = 3
Espero ter ajudado