作业帮15(x+2.4)+2.1x=180
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15(x+2.4)+2.1x=180
15(x+2.4)+2.1x=180
15(x+2.4)+2.1x=180
貌似除不尽.答案应该是约等于8.42,如果没算错的话
不懂
四舍五入为-10.53
15(x+2.4)+2.1x=180
15(x+2.4)+21x=180
2.4x-x=2.1
180=( )x( )x( )x( ) ×( )
x+x=x+15
180/(x-15)-180/x=2
2.4X+9=1.6X+15
(180-x)*15=12*x.
(300+X)/15=(180+X)/12
18%x+32%x=2 x+20%x=2.4 x+5%x=4.2 15%x+35%x=0.2
2.1x+2.4×3.5=14.7 (100-5x)÷6=15 3x+4x=105 7x-x+8=2.1x+2.4×3.5=14.7(100-5x)÷6=153x+4x=1057x-x+8=14 准确率高,快有赏!
x+x（x*16)=9000 x+x（x*15)=8000 求这两题X解
9x-0.9乘7=2x+2.1 x=?9x-0.9乘7=2x+2.1 x=?还有：3(2x-1.2)=2(x+3.5) x=?2.4x-9.8=1.4x-9
4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2）除2=71
3.6x*(2.1-x)=4.8x
（X+X)+(X-X)+(X*X)+(X/X)=100
1.8x-x=2.4x=？
180=( )x( )=( )X( )=( )X( )