Question

A+3b = 7, c= 3 , then the value of a+3 (b+c ) =............

a) 10
b) 16
c) 21
d) 30
step by step pls
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Answer 1

See attachment for math work.

Answer 2

16

Explanation:

a+ 3(b + c)

a + 3b + 3c

but a + 3b = 7 and c = 3

7+3(3)

7 + 9

=16