解方程提高训练 2233 X- X= 2X + = 70%X + 20%X = 3.6 7554 X×314=20× 25% + 10X = X - 15%X = 68 54 X+38X=121 5X 6X+5 =13.4 X÷277=16 X 125 ÷X=310 X÷ 62635=1345×25 310X-21×23=4 5-3×5521=7 34X1438 3X=+738X=4 4X35 X = 2572 x-3 ×9 = 29 x14x20 23X÷14=12 38 -6×23=2 89 X = 16×1651 12x + 16x = 4 2(x2.6)8 4213336X+5 =13.4 X- X= 4χ-6=38 0.36×5- x = 531045 5X=15844152 X= X÷= (x- 4.5) = 7 19 23X÷14=12 X÷635=2645÷1325 4+0.7X=102 X-38X=400 X-0.125X=8 X+37 X=18 X x×23+12=4×38 X 21153255X=72 14 23X+12X=42 X+×( 16 + 38 )=1312-37X=12 52889X=16×1651 X4=30% x- 0.8x = 16+6 14X=105 20 x36X = 34 x- -0.375x=565 X-2.4×5=8 X312 x- 25%x = 10 – 8.5= 1.5 45 x -4= 21 +25%X=90 -387 X= 9 X-0.25= x X 本文来源:https://www.wddqw.com/doc/8aee084876a20029bc642d0c.html