X+=
、解方程
(+X)+X=+2
2(X+X+)=
25000+X=6X
3200=450+5X+X
12X-8X=
X-=6
=15
=+=
、解方程
(+X)+X=+2
2(X+X+)=
25000+X=6X
3200=450+5X+X
12X-8X=
X-=6
=15
=
X+=
15X = 3 3X - 8 = 16
7(X-2)=2X+3
3X+9=27
12X=300-4X
18(X-2)=270
7X+=
3X+5=
30+X+25=85
15X = 3 3X - 8 = 16
15X = 3 3X - 8 = 16
3(X+)=21 +8=43
6X-3X=18
+18=3X
5X3-X+2=8
+X=
3(X+)=21 +8=43
X-= 5x-3x=68 4(4x-1)=3( 22-x)
240+(x-7)=30 (20-8x)+3=2x+1 (6x-40)+ 8=5x-8
7(2x-6)=84
5(x-8)=3x
7x-7=6x+4
(22-x)=68x
8x-6x+30=12x+15
7(x+20)=5x+60
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