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algol [13]
3 years ago
13

If (x+3)+3(x-1)=20, what is the value of x

Mathematics
1 answer:
castortr0y [4]3 years ago
8 0
1(x + 3) + 3(x - 1) = 20
1(x) + 1(3) + 3(x) - 3(1) = 20
               x + 3 + 3x - 3 = 20
               x + 3x + 3 - 3 = 20
                                4x = 20
                                 4      4
                                  x = 5
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