
2x-0.5x=7801971怎么解?
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解:解方程, 此方程的解为x = 5201314
2x - 0.5x = 7801971
2x - (5/10)x = 7801971
2x - (1/2)x = 7801971
(4/2)x - (1/2)x = 7801971
(3/2)x = 7801971
x = 7801971 ÷ 3/2
x = 7801971 × 2/3
x = 15603942/3
x = (5201314×3)/3
∴x = 5201314
答:此方程的解为x = 5201314
2x - 0.5x = 7801971
2x - (5/10)x = 7801971
2x - (1/2)x = 7801971
(4/2)x - (1/2)x = 7801971
(3/2)x = 7801971
x = 7801971 ÷ 3/2
x = 7801971 × 2/3
x = 15603942/3
x = (5201314×3)/3
∴x = 5201314
答:此方程的解为x = 5201314
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