0.7x-1.71=4.59 1.4x-x=37.2 (x+5)÷7=1.5
问题描述:
0.7x-1.71=4.59 1.4x-x=37.2 (x+5)÷7=1.5
答
0.7x-1.71=4.59
0.7x=4.59+1.71
0.7x=6.3
x=6.3÷0.7
x=9
1.4x-x=37.2
0.4x=37.2
x=37.2÷0.4
x=93
(x+5)÷7=1.5
x+5=1.5×7
x+5=10.5
x=10.5-5
x=5.5