E = x + 6(5 + x)
= x + 30 + 6x
= 7x + 30
F = 6 + (5 + x)
= 6 + 5 + x
= 11 + x
G = 6x(5 + x) - x
= 30x + 6x² - x
= 29x + 6x²
H = 6x + (5 + x)
= 6x + 5 + x
= 7x + 5
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E = x + 6(5 + x)
= x + 30 + 6x
= 7x + 30
F = 6 + (5 + x)
= 6 + 5 + x
= 11 + x
G = 6x(5 + x) - x
= 30x + 6x² - x
= 29x + 6x²
H = 6x + (5 + x)
= 6x + 5 + x
= 7x + 5