x-(-5)= -15 -x+8= -1 -4-x=12 4-x=-8 x-5=-18 -x-(-4)=0 -x-8=13 -(-3)-x=-6 -14+x=14 -(-4)-(-x)=-5 23/09/2021 Bởi Caroline x-(-5)= -15 -x+8= -1 -4-x=12 4-x=-8 x-5=-18 -x-(-4)=0 -x-8=13 -(-3)-x=-6 -14+x=14 -(-4)-(-x)=-5
x – (-5) = -15 ⇔ x + 5 = -15 ⇔ x = -15 – 5 ⇔ x = -20 – x + 8 = -1 ⇔ – x = -1 – 8 ⇔ – x = -9 ⇔ x = 9 – 4 – x = 12 ⇔ x = – 4 – 12 ⇔ x = – 16 4 – x = -8 ⇔ x = 4 – (-8) ⇔ x = 12 x – 5 = -18 ⇔ x = -18 + 5 ⇔ x = -13 -x – (-4) = 0 ⇔ -x + 4 = 0 ⇔ – x = -4 ⇔ x =4 -x – 8 = 13 ⇔ -x = 13 + 8 ⇔ -x = 21 ⇔ x = -21 – (-3) – x = -6 ⇔ 3 – x = -6 ⇔ x = 3 – (-6) ⇔ x = 9 -14 + x = 14 ⇔ x = 14 – (-14) ⇔ x = 28 – (-4) – (-x) = -5 ⇔ 4 + x = -5 ⇔ x = -5 – 4 ⇔ x = -9 Bình luận
x-(-5)= -15 ⇒x+5=-15 ⇒x=-20 -x+8= -1 ⇒-x=-1-8 ⇒-x=-9 ⇒x=9 -4-x=12 ⇒-x=12+4 ⇒-x=16 ⇒x=-16 4-x=-8 ⇒-x=-8-4 ⇒-x=-12 ⇒x=12 x-5=-18 ⇒x=-18+5 ⇒x=-13 -x-(-4)=0 ⇒-x+4=0 ⇒-x=-4 ⇒x=4 -x-8=13 ⇒-x=13+8 ⇒-x=21 ⇒x=-21 -(-3)-x=-6 ⇒3-x=-6 ⇒-x=-6-3 ⇒-x=-9 ⇒x=9 -14+x=14 ⇒x=14+14 ⇒x=28 -(-4)-(-x)=-5 ⇒4+x=-5 ⇒x=-5-4 ⇒x=-9 Bình luận
x – (-5) = -15
⇔ x + 5 = -15
⇔ x = -15 – 5
⇔ x = -20
– x + 8 = -1
⇔ – x = -1 – 8
⇔ – x = -9
⇔ x = 9
– 4 – x = 12
⇔ x = – 4 – 12
⇔ x = – 16
4 – x = -8
⇔ x = 4 – (-8)
⇔ x = 12
x – 5 = -18
⇔ x = -18 + 5
⇔ x = -13
-x – (-4) = 0
⇔ -x + 4 = 0
⇔ – x = -4
⇔ x =4
-x – 8 = 13
⇔ -x = 13 + 8
⇔ -x = 21
⇔ x = -21
– (-3) – x = -6
⇔ 3 – x = -6
⇔ x = 3 – (-6)
⇔ x = 9
-14 + x = 14
⇔ x = 14 – (-14)
⇔ x = 28
– (-4) – (-x) = -5
⇔ 4 + x = -5
⇔ x = -5 – 4
⇔ x = -9
x-(-5)= -15
⇒x+5=-15
⇒x=-20
-x+8= -1
⇒-x=-1-8
⇒-x=-9
⇒x=9
-4-x=12
⇒-x=12+4
⇒-x=16
⇒x=-16
4-x=-8
⇒-x=-8-4
⇒-x=-12
⇒x=12
x-5=-18
⇒x=-18+5
⇒x=-13
-x-(-4)=0
⇒-x+4=0
⇒-x=-4
⇒x=4
-x-8=13
⇒-x=13+8
⇒-x=21
⇒x=-21
-(-3)-x=-6
⇒3-x=-6
⇒-x=-6-3
⇒-x=-9
⇒x=9
-14+x=14
⇒x=14+14
⇒x=28
-(-4)-(-x)=-5
⇒4+x=-5
⇒x=-5-4
⇒x=-9