x+8x=99用解方程怎么解?
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解:解方程,此方程的解为x = 11
x + 8x = 99
(1+8)x = 99
9x = 99
x = 99 ÷ 9
x = 99 × 1/9
x = 99/9
x = (11×9)/9
∴x = 11
答:此方程的解为x = 11
x + 8x = 99
(1+8)x = 99
9x = 99
x = 99 ÷ 9
x = 99 × 1/9
x = 99/9
x = (11×9)/9
∴x = 11
答:此方程的解为x = 11
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