5.5x+21-x=50-4.5x

5.5x+21-x=50-4.5x 5.5x+21-x=50-4.5x-11 x+ x+(x*50%)=1.5X? （X+X)+(X-X)+(X*X)+(X/X)=100 matlab中a=[x(11)/x,x(12)/x;x(21)/x,x(22)/x;x(31)/x,x(32)/x;x(41)/x,x(42)/x;x(51)/x,x(52)/x]咋错了 x*x*x*x*x=80000? （x-25)+(x-23)+(x-27)+(x-21)+(x-26)=x 求x x+3x+x-2+x+x+50%x=188 求x 9x+7x-x=4.5 6.3+4.5x=36.3-5.5x 50X=200+X*X 30%x=50%x-20x 解方程:x+50%x=4.5 21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272 8x+5x=1.3 4.5x-3.2x=3.9 5.5x-x=9.9 11x-7x-26=34 列方程 26.2-9X=8.24（X+2)=11.64X+0.5乘3=6.75X-3.3=7.31.7X-0.7X=20X-4.5+5.5=158X+5乘7=914.8X+3.4乘6.7=34.785.4X+0.6X=6.63.5（X乘7）=25.913.056除X+3.20.35乘X=8.898（X-3）-5X=275X+20==10024-16X=2.77.5乘6-5X=0.825X-16X=2.73.5乘C(X+50)=238X-12.6=8.4 x*(21+x)=100x*(21+x)=100 20%x+20%x×30%x-20%x=4.5