解方程X+56=102 x-970=270 6.6+x=24.5 25x=5 x÷16=16 x÷1.2=1.5.
(1)X+56=102,
X+56-56=102-56,
x=46;
(2)x-970=270,
x-970+970=270+970,
x=1240;
(3)6.6+x=24.5,
6.6+x-6.6=24.5-6.6,
x=17.9;
(4)25x=5,
25x÷25=5÷25,
x=0.2;
(5)x÷16=16,
x÷16×16=16×16,
x=256;
(6)x÷1.2=1.5,
x÷1.2,1.2=1.5×1.2,
x=1.8.
X+56-56=102-56,
x=46;
(2)x-970=270,
x-970+970=270+970,
x=1240;
(3)6.6+x=24.5,
6.6+x-6.6=24.5-6.6,
x=17.9;
(4)25x=5,
25x÷25=5÷25,
x=0.2;
(5)x÷16=16,
x÷16×16=16×16,
x=256;
(6)x÷1.2=1.5,
x÷1.2,1.2=1.5×1.2,
x=1.8.
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第1个回答 2019-06-15
(x+1.8)÷8=6.6
==>
(x
+1.8)
=
6.6
x
8
==>
x
+
1.8
=
52.8
==>
x
=
52.8
-
1.8
==>
x
=
51
==>
(x
+1.8)
=
6.6
x
8
==>
x
+
1.8
=
52.8
==>
x
=
52.8
-
1.8
==>
x
=
51