7+X-3+X-3=5
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解:解方程,此方程的解为x = 2
7 + X - 3 + X - 3 = 5
(X + X)+(7 - 3 - 3)= 5
2X + 1 = 5
2x = 5 - 1
2x = 4
x = 4 ÷ 2
x = 4 × 1/2
x = 4/2
x = (2×2)/2
∴x = 2
答:此方程的解为x = 2
7 + X - 3 + X - 3 = 5
(X + X)+(7 - 3 - 3)= 5
2X + 1 = 5
2x = 5 - 1
2x = 4
x = 4 ÷ 2
x = 4 × 1/2
x = 4/2
x = (2×2)/2
∴x = 2
答:此方程的解为x = 2
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