六上求未知数x

六上求未知数x 11解方程 x + x=15 23 X―0.25X = 1.5 25%x=4.75 311 : = x: 8410 3x+60%x=4.32 2x-4=16 214 315x, (6+3x)?2=18 180，6x,330 x-0.15x=8.5 x,0.25x,3 0.8×(x-0.4)=8 9 1012x，7x, 3 + 4x=4.5 2 233x，2=9.8 2X + = 55 2 570%X + 20%X = 3.6 x，x=49 13 54=20× X× 1,85%x=0.15 4 51.6x,3.7=4.3 25% + 10X = 21X - 15%X = 68 54x，x=26 3 398X，X,121 710x?2= 55 32175X,3×, 24X, X= 7 25321 34572 X?,12 X = 81166X，5 =13.4 9651 X = × 3 2613683X= 354525X? =× 27 7164x,3 ×9 = 29 X?= 7311 8426X，X= x + x = 4 232 31034X,6×=2 X,21×=4 1x，x,20 4 2(x,2.6),8 1236X，5 =13.4 ?X= 510 8116213 X- X= 9651X=× 5310 261364χ,6,38 352545X?=? 15 1195X= 4X-0.25= 84 21154+0.7X=102 X= 15421 53228X?= X+X=42 211 344X?=12 X+X=105 2533 5872 X= X-X=400 33X-0.125X=8 0.36×5- x = 45 3 X+ X=18 27 (x- 4.5) = 7 3 1313 X×( + )= 16812 x- 25%x = 10 2 5 6x- 0.8x = 16+6 x,0.375x= 32120 x– 8.5= 1.5 382x×+=4× 4 x- x -4= 21 35 7X,X,12 X，25%X=90 5 X,2.4×5,8 11338×,χ= 525X, X= 79 χ+50%=42 χ+2.4χ=6 4χ,13=31 1.8χ,χ=2.4 4.5+8χ=27 6×3,1.8χ=7.2 2χ+4.3×3=14 117,5χ=2.4+3 5 3χ×(1,),1 318 χ,χ= 48 31χ,χ,548 12.6×,2χ=8 6 13113?4χ,2.5 ,χ, 4225 1212χ,χ，, 3χ,16×3,102 3235 17χ,χ= 4χ，7.1,12.5 210 3 χ:=12:3 0.3χ,2,9.1 4 11x,, 2.4χ,0.45×2=0.3 48 123χ+χ,2 6.3,5χ=4.1 413 3×2.5,χ=0.6 131,χ,89.2 5 15 χ,χ= 4χ，7.1,12.5 612