9x+(17-x)×6=120 怎么解?
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解:解方程, 此方程的解为x = 6
9x + (17 - x) × 6 = 120
9x + 17 × 6 - x × 6 = 120
9x + 102 - 6x = 120
9x - 6x = 120 - 102
3x = 18
x = 18 ÷ 3
x = 18 × 1/3
x = 18/3
∴x = 6
答:此方程的解为x = 6
9x + (17 - x) × 6 = 120
9x + 17 × 6 - x × 6 = 120
9x + 102 - 6x = 120
9x - 6x = 120 - 102
3x = 18
x = 18 ÷ 3
x = 18 × 1/3
x = 18/3
∴x = 6
答:此方程的解为x = 6
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