Answer:
4x+12
Explanation:
4(x+3)=4x+12.
You use the distributive property by multiplying both numbers in the parentheses by 4
4x +12
Distributive property: a*(b + c) = (a *b)+(a *c)
Here, a = 4 ; b = x and c = 3
4*(x + 3) = 4*x + 4*3
= 4x + 12
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