Toán Lớp 6: a) 3 + x = – 8
b) 110 – 2x = 10
c) (35 + x) – 12 = 27
d) 96 : 2x + 2 = 3
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Toán Lớp 6: a) 3 + x = – 8
b) 110 – 2x = 10
c) (35 + x) – 12 = 27
d) 96 : 2x + 2 = 3
Comments ( 2 )
$a)3+x=-8$
$⇒ x=-8-3$
$⇒ x=-11$
Vậy $x=-11$
$b)110-2x=10$
$⇒ 2x=110-10$
$⇒ 2x=100$
$⇒ x=50$
Vậy $x=50$
$c)(35+x)-12=27$
$⇒ 35+x-12=27$
$⇒ 23+x=27$
$⇒ x=4$
Vậy $x=4$
$d)96:2x+2=3$
$⇒ 96:2x=1$
$⇒ 2x=96$
$⇒ x=48$
Vậy $x=48$
3 + x = – 8
x = – 8 – 3
x = -11
110 – 2x = 10
2x = 110- 10
2x = 100
x = 100 : 2
x = 50
(35 + x) – 12 = 27
35 + x = 27 + 12
35 + x = 39
x = 39 – 35
x = 4
96 : 2x + 2 = 3
96 : 2x = 3 – 2
96 : 2x = 1
2x = 96
x = 96 : 2
x = 48