8x_5=52.6的解方程检验左边怎样检验?
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解:解方程, 此方程的解为x = 36/5,【即x = 7.2】
8x - 5 = 52.6
8x = 52.6 + 5
8x = (52×10+6)/10 + 50/10
8x = 526/10 + 50/10
8x = 576/10
8x = 288/5
x = 288/5 ÷ 8
x = 288/5 × 1/8
x = 36/5
∴x = 7.2
经检验,8 × 7.2 - 5 = 52.6符合题意
答:此方程的解为x = 36/5,【即x = 7.2】
8x - 5 = 52.6
8x = 52.6 + 5
8x = (52×10+6)/10 + 50/10
8x = 526/10 + 50/10
8x = 576/10
8x = 288/5
x = 288/5 ÷ 8
x = 288/5 × 1/8
x = 36/5
∴x = 7.2
经检验,8 × 7.2 - 5 = 52.6符合题意
答:此方程的解为x = 36/5,【即x = 7.2】
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