1.Tìm x, biết
a, 11/13 – ( 5/42 – x ) = – (15/28 – 11/13 )
b, x + 1/3 = 2/5 – ( -1/3)
c, – 5/8 – x = – 3/20 – (-1/6)
d, x – (-1/4) = -5/6+1/8
e, -2/3 x = 4/15
g, x : 22/15 = -8/27
giúp mk vs mn ơi!!!!!!!!!!!!!!!!
1.Tìm x, biết
a, 11/13 – ( 5/42 – x ) = – (15/28 – 11/13 )
b, x + 1/3 = 2/5 – ( -1/3)
c, – 5/8 – x = – 3/20 – (-1/6)
d, x – (-1/4) = -5/6+1/8
e, -2/3 x = 4/15
g, x : 22/15 = -8/27
giúp mk vs mn ơi!!!!!!!!!!!!!!!!
a, 11/13 – (5/42 – x) = – (15/28 – 11/13)
→ 5/42-x = 113/364+11/13
→ x = 5/42-421/364
→ x = -1133/1092
b, x + 1/3 = 2/5 – ( -1/3)
→ x = 11/15-1/3
→ x = 2/5
c, – 5/8 – x = – 3/20 – (-1/6)
→ x = -5/8-1/60
→ x = -77/120
d, x – (-1/4) = -5/6+1/8
→ x = -17/24+(-1/4)
→ x = -23/4
e, -2/3 x = 4/15
→ x = 4/15:(-2/3)
→ x = -2/5
g, x : 22/15 = -8/27
→ x = -8/27.22/15
→ x = -176/405
`a, 11/13 – (5/42 – x) = – (15/28 – 11/13)`
`⇔5/42-x = 113/364+11/13`
`⇔x = 5/42-421/364`
`⇔x = -1133/1092`
`b, x + 1/3 = 2/5 – ( -1/3)`
`⇔x = 11/15-1/3`
`⇔x = 2/5`
`c, – 5/8 – x = – 3/20 – (-1/6)`
`⇔x = -5/8-1/60`
`⇔x = -77/120`
`d, x – (-1/4) = -5/6+1/8`
`⇔x = -17/24+(-1/4)`
`⇔x = -23/4`
`e, -2/3 x = 4/15`
`⇔x = 4/15÷(-2/3)`
`⇔x = -2/5`
`g, x ÷22/15 = -8/27`
`⇔x = -8/27 . 22/15`
`⇔x = -176/405`
Xin hay nhất !