3(x+2.1)=10.5

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3(x+2.1)=10.53(x+2.1)=10.53(x+2.1)=10.5 

3(x+2.1)=10.5
3(x+2.1)=10.5

3(x+2.1)=10.5
 

解下列方程 x+4.8=7.2 x-6.5=3.2 x÷8=0.4 6x+18=48 3(x+2.1)=10.5 12x-9x=8.7解下列方程 3.8+x=6.3 x-7.9=2.6 2.5x=14 x÷3=1.2 3.4x-48=26.8 2x-97=34.2 42x+25x=134 13(x+5 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 6乘以4-0.5x=12.8 (24.5-x)乘以2-13=20 5x-x+1.8=3.6 (x+2.1)除以3=10.5 3.5乘以x=105 13.06-x=8.07 0.2(x-3.5)=1 12x-3.5x+85 1.2x-x=35 3-3x=0.3 3.5乘以6-0.2x=11.4 3.5乘以(6-0.2x)=17.5 请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360 3(x+2.1)=10.5 12x-9x=8.7 6x+18=48 3(x+2.1)=10.5 x+4.8=7.2 0.3+0.3x=0.39 x= 2x-1.5x=7.6x x= 0.36x÷0.3=1.2 x=6(x+1.2)=18.6 x= 7x+2x = 8.1 x= (x-5)÷3=1.7 x=5(x+1.1)=15.5 x= 9x+25=70 x= 7x-4x=2.1 x= 一.13.2x+9x=33.3 二.13(x+5)=169 三.3(x+2.1)=10.一.13.2x+9x=33.3二.13(x+5)=169三.3(x+2.1)=10.5四.12x-9x=8.7五.1.5(x+1.6)=3.6六.2(x-3)=5.8七.3.4x-48=26.8八.4.2x+2.5=134 解方程(要过程) 6x+18=48 15x-43=92 3x-2×6=24 3(x+2.1)解方程(要过程)6x+18=4815x-43=923x-2×6=243(x+2.1)=10.5(2x-12)×3=48(39+5x)÷5=23 (x/x-2)-2=3(x-2)/x 函数f(x)=x立方-3x(|x| x(2x-3)=x² 求x, 解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3) 3/x-1=4/x 6/x+1=x+5/x(x+1) (X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0 小学数学 解复杂方程x+1.5x=12.5 0.4x+7.2=10 2.1x(x-3)=2.53 x-3.7=1.52 3x(x+2.1)=10.5十五分钟内还没有回答就不要了,快