2x - 3 = 2x - 5
2x = 2x - 2
2x - 2x = -2
0 =/= -2
Zero is not equal to -2 so the answer is no solution.
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-2 x 5 = -10
4 equals 2x2, 6 equals 2x3
(2x5)-3
If x = -7, then x3 = -343 so that 2x3 = -686 y = 2 then 15 y = 30 So 2x3 + 15y = -686 + 30 = -656
6 and 10 2x3=6 2x5=10 HCF=2 LCM=30