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3 years ago

Solve 7+x/3 = 2x-5 Give all working out

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

7 0

X = 36/5
Or x = 7.2

21 + x = 6x - 15
21 = 6x - 15 - x
21 = 5x - 15
21 + 15 = 5x
36 = 5x
36/5 = x

MariettaO [177]3 years ago

7 0

7+x/3 = 2x-5

multiply both sides by 3

21+x =6x-15

move the 6

21+x-6x = -15

move the 21

x-6x = -15-21

combine like terms

-5x = -15-21

divide both sides:

-5x = -36

answer: x = 36/5

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