Question

A) 4.3+ 1-2(a-1)=a Me ajuda

Answer 1

4 * 3 + 1 - 2 (a-1) = a
12 + 1 -2a + 2 = a
-2a -a = -2 - 1 - 12
-3a = -15
a = -15/-3 = +5