Question

4× + 10 = 2× -10. É

a) 0
b)5
c)10
d)-10


5x +2 (× - 2) = 24. É

a) -5.
b) +5
c)+7
d) +4​

Answer 1

$4x + 10 = 2x - 10 \\ 4x - 2x = - 10 - 10 \\ 2x = - 20 \\ x = \frac{ - 20}{2} \\ x = -10$

reposta letra d)

$5x + 2(x - 2) = 24 \\ 5x +2x - 4 = 24 \\ 7x = 24 + 4 \\ 7x = 28 \\ x = \frac{28}{7} \\ x = 4$

resposta letra d)

att, BeatriceBaudelaire ღ