math
posted by israel .
4x(3x) = 7(x3) +10 how do i get the answer 4

4x(3x) = 7(x3) +10
4x  3 + x = 7x  21 + 10
5x  7x = 10 + 3  21
2x = 8
x = 8/2
x = 4
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