9x+1.2×6=11.7x+25%x=5
1个回答
(1)9x=4.5
x=0.5
(2)1.25x=5
x=4
相关问题
解方程 (1)6.7+6X=11.5 (2)2.5+7X=4.6 (3)9X+X=25.
﹚(12+x﹚÷2=7 9×﹙x﹢6﹚=2x﹙14+11x﹚ 168-5x=9x .x+4=40-x-8 7×﹙x-2﹚
1/5x7+1/7x9+1/9x11+1/11x13+…+1/23x25
2.1X+7.9X=6.9 5X+0.8×2=7.12X+5.8=8.2 6X-3×4=1.2
解方程:X÷0.8=1.25; 3X-1.2X=9; 5(X-6)=12; 7X-2×9=80.
1.(10.5x11.7x57×85)/(1.7×1.9×3×5×7×9×11×13×15)=?
(125/1+0.8)x1.25 (方法) 9/7x11/5+9/5x11/1 (方法)
2/3x+1/4x=11/2 解方程. 11/7-7/11-4/11 5/12×9/2
解方程:5x-2=3.6;7(x-1.2)=2.1;7.5×8-4x=20;9.6x-2.4x=21.6;4x-7×1.
解方程.6x+1.2×4=9.6 8x-x=12+2.7 5×(x+2.5)