16×3+0.2x=50 (x-10)÷4=20 3x+7×1.2=10.8 (x-2.4)÷8=1.25 4×(x-3)=9.6
问题描述:
16×3+0.2x=50 (x-10)÷4=20 3x+7×1.2=10.8 (x-2.4)÷8=1.25 4×(x-3)=9.6
答
16×3+0.2x=50
0.2x=50-48
0.2x=2
x=10
(x-10)÷4=20
x-10=80
x=90
答
16×3+0.2x=50
0.2x=50-48
0.2x=2
x=10
(x-10)÷4=20
x-10=80
x=90
3x+7×1. 2=10.8
3x=10.8-8.4
3x=2.4
x=0.8
(x-2.4)÷8=1.25
x-2.4=8×1.25
x=10+2.4
x=12.4
4×(x-3)=9.6
x-3=2.4
x=5.4
答
16×3+0.2x=50
48+0.2x=50
0.2x=2
x=10
(x-10)÷4=20
x-10=80
x=90
3x+7×1.2=10.8
3x=10.8-8.4
3x=2.4
x=0.8
(x-2.4)÷8=1.25
x-2.4=1.25*8
x-2.4=10
x=12.4
4×(x-3)=9.6
x-3=9.6÷4
x-3=2.4
x=5.4