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4x-5=2(2x-1)-3
简化 4x + -5 = 2(2x + -1) + -3 重新排序条件: -5 + 4x = 2(2x + -1) + -3 重新排序条件: -5 + 4x = 2(-1 + 2x) + -3 -5 + 4x = (-1 * 2 + 2x * 2) + -3 -5 + 4x = (-2 + 4x) + -3 重新排序条件: -5 + 4x = -2 + -3 + 4x 组合类似条件: -2 + -3 = -5 -5 + 4x = -5 + 4x 添加 '5' 到等式的每一边. -5 + 5 + 4x = -5 + 5 + 4x 组合类似条件: -5 + 5 = 0 0 + 4x = -5 + 5 + 4x 4x = -5 + 5 + 4x 组合类似条件: -5 + 5 = 0 4x = 0 + 4x 4x = 4x 添加 '-4x' 到等式的每一边. 4x + -4x = 4x + -4x 组合类似条件: 4x + -4x = 0 0 = 4x + -4x 组合类似条件: 4x + -4x = 0 0 = 0 解: 0 = 0 找不到要解决的变量. This equation is an identity, all real numbers are solutions.
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