解:解方程, 此方程的解为a = 99/10,【即a = 9.9】
2a ÷ 3.6 = 5.5
2a = 5.5 × 3.6
2a = (5×10+5)/10 × (3×10+6)/10
2a = 55/10 × 36/10
2a = 11/2 × 18/5
2a = 99/5
a = 99/5 ÷ 2
a = 99/5 × 1/2
a = 99/10
∴a = 9.9
答:此方程的解为a = 99/10,【即a = 9.9】
解答如下:
2a÷3.6=5.5
a÷1.8=5.5
a=5.5×1.8
a=9.9