40道解方程带答案过程 解方程计算题带答案

解方程1:3/8x-25%x=42:x÷4=30%3:3x+20%x=1124:x-40%x=3.6解:﹙3/8-25%﹚x=4解:x=30%*4解:3·2x=112解:60%x=3·61/8x=4x=1.2x=35x=6x=325:14%x-9.1=0.76.

3/7x=3/4x-5/12=3/8x-5/6=11/3-x=2/54x*2/5=3/51/5x-1/10=1/224x-1/4=3/4x-5/8=3/42/7x=3/73/5-2x=3/51/4x=14/9x=11/6=4/33x2/3=2x-2x-1/4=1/3

3X+5X=488x=48 x=614X-8X=12 6x=12 x=26*5+2X=44 2x=44-302x=14 x=720X-50=. 3x+6=18 3x=18-63x=12 x=416+8x=408x=40-168x=24 x=3 2x-8=82x=8+82x=16 x=8 4x-.

(1)2x+xx+3=1; (2)15x=2*15 x+12;(3)2(1x+1x+3)+x-2x+3=1.解 (1)方程两边都乘以x(3+3),去分母,得2(x+3)+x2=x2+3x,即2x-3x=-6 所以 x=6.检验:当x=6时,x(x+3)=6.

方程1) 66x+17y=3967 25x+y=1200 答案:x=48 y=47 (2) 18x+23y=2303 74x-y=1998 答案:x=27 y=79 (3) 44x+90y=7796 44x+y=3476 答案:x=79 y=48 (4) 76x-66y=4082 30.

1) 66x+17y=3967 25x+y=1200 答案:x=48 y=47 (2) 18x+23y=2303 74x-y=1998 答案:x=27 y=79 (3) 44x+90y=7796 44x+y=3476 答案:x=79 y=48 (4) 76x-66y=4082 30x-y=.

(1)2x+8=16 (2)x/5=10 (3)x+7x=8 (4)9x-3x=6 (5)6x-8=4 (6)5x+x=9 (7)x-8=6x (8)4/5x=20. (37)15+6x=27 (38)5-8x=4 (39)7x+8=15 (40)9-2x=1 (41)4+5x=9 (42)10-x=8 (43)8x+9=.

2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 2(x-2)+2=x+1 5x^2+3x+1=0 7x^2+x+12=0 2x^2+4x+4=0 8x^2+3x+1=0.

X+15=1.5X-153X+5X=48 14X-8X=12 6*5+2X=44 20X-50=50 28+6X=88 32-22X=10 . X-6=12 56-2X=20 4y+2=6 x+32=76 3x+6=18 16+8x=40 2x-8=8 4x-3*9=29 8x-3x=105 .

(1)x-4=7 x=4+7=11 (2)2x+6=12 2x=12-6 x=3 (3)3x-6=12 3x=12+6 x=18÷3=6 (4)5(x-4)=20 x-4=20÷5=4 x=4+4=8 (5)5(x+5)=15 x+5=15÷5=3 x=3-5=-2