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solve 1.3z - 2z 4
solve 1.3z + 2z - 5 0
solve 1.3z - 4 10
solve 1.3z - 2z 3.9
solve 1.3z + 1.5 2z
solve 1.3z - 3 0
solve 1.3z * 4 12
solve 1.3z * 2 6
solve 1.3z - 1.5 3
solve 1.3z - 1.5 0
solve 1.3z - 5.4 1.5 for z
solve 1.3z - 1.5 for z
solve 1.3z + z / 2 5
solve 1.3z + 2 8
solve 1.3z + 2 7
solve 1.3z / 0.5z 3
solve 1.3z - 2z 4, solve 1.3z + 2z - 5 0, solve 1.3z - 4 10, solve 1.3z - 2z 3.9, solve 1.3z + 1.5 2z, solve 1.3z - 3 0, solve 1.3z * 4 12, solve 1.3z * 2 6, solve 1.3z - 1.5 3, solve 1.3z - 1.5 0, solve 1.3z - 5.4 1.5 for z, solve 1.3z - 1.5 for z, solve 1.3z + z / 2 5, solve 1.3z + 2 8, solve 1.3z + 2 7, solve 1.3z / 0.5z 3
