图
(1)4÷2 3 (x?1)=2 5 , 4÷[4÷2 3 (x?1)]=4÷2 5 , 2 3 (x?1)×3 2 =10×3 2 , x-1+1=15+1, x=16; (2)2 3 x+1 2 x=42, 7 6 x=42, 7 6 x×6 7 =42×6 7 , x=36; (3)6x+4.5=9x-1.2, 6x+4.5-6x=9x-1.2-6x, 4.5+1.2=3x-1.2+1.2, 5.7÷3=3x÷3, x=1.9; (4)(4 7 x):2 3 =4:7, 4 7 x×7=2 3 ×4, 4x÷4=8 3 ÷4, x=2 3 .
x÷4/7=3/2
x=3/2×4/7
x=6/7
解方程:
x÷4/7=3/2
x=3/2×4/7
x=6/7