0.4（y-0.2）+1.5＝0.7y-0.38

0.4（y-0.2）+1.5＝0.7y-0.38 解方程 0.4（y-0.2)+1.5=0.7y-0.38 0.4(y-0.2)+1.5=0.7y-0.38 0.4（y一0.2）十1.5二0.7y一0.38这道题如何解方程? 0.4（y一0.2）十1.5二0.7y一0.38这道题如何解方程? (y-0.3)/0.2=(0.7y+0.5)/0.5-1.5 计算 (y-0.3)/2=(0.7y+0.5)/0.5-1.5应该是(y-0.3)/0.2=(0.7y+0.5)/0.5-1.5 0.4(y-0.2)＋1.5=0.7y-0.38解方程 -0.7y+0.2=-0.3y+0.1 y=? -0.7y+0.2= -0.3y+0.1 0.2y²-0.4y=0.1 1x=0.5y 2x=2y 3x=4.5y 求规律.（如y＝...）如果y是1.5,x是多少? ··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y ·0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y [(x-y)²+（x+y）(x-y)]/2xx=3,y=-1.5 y Y. Y