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Natali5045456 [20]
4 years ago
15

51 = 2x - 5(3x + 21)

Mathematics
1 answer:
Ulleksa [173]4 years ago
4 0

51=2x-5(3x+21)

you multiply -5 and 3x=-15x= -15x and -5 multiply 21=105

51=2x-15x-105

multiply 2x and -15x =-13x

51= -31x-105

31x=-105-51

13x=-156

Answer x=-12

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