Toán Lớp 6: b) 175 – (x + 65) = 148 c)
d) ( 5x – 33) – 43 = -191 e)
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Toán Lớp 6: b) 175 – (x + 65) = 148 c)
d) ( 5x – 33) – 43 = -191 e)
Comments ( 2 )
Giải đáp:
$b) 175-(x+65)=148$
$⇒ x+65= 175-148$
$⇒ x+65= 27$
$⇒ x= 27-65$
$⇒ x= -38$
$Vậy$ $x=-38$
$d) (5x-33)-43=-191$
$⇒ 5x-33= (-191)+43$
$⇒ 5x-33= (-148)$
$⇒ 5x= (-148)+33$
$⇒ 5x= -115$
$⇒ x= (-115):5$
$⇒ x= -23$
$Vậy$ $x=-23$
Giải đáp:
b) x = -38
d) x = -23
e) x = -22
Lời giải và giải thích chi tiết:
b) 175 – ( x + 65 ) = 148
x + 65 = 148 – 175
x + 65 = 27
x = 27 – 65
x = -38
Vậy x = -38
________________________________
d) ( 5x – 33 ) – 43 = -191
5x – 33 = (-191) + 43
5x – 33 = -148
5x = (-148) + 33
5x = -115
x = (-115) : 5
x = -23
Vậy x = -23
_________________________________
e) 3-(17 – x ) = 289 – ( 36 + 289)
3-(17 – x ) = 289 – 36 – 289
3-(17 – x ) = 289 – 289 – 36
3-(17-x) = -36
17 – x = 3 – (-36)
17 – x = 39
x = 17 – 39
x = -22
Vậy x = -22
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