Answer:
a = 7.9
Step-by-step explanation:
We can solve for a in the equation:
2.25(a + 1.3) = 20.7
by applying the distributive property.
The distributive property states that:
a(b + c) = ab + ac
Using this property, we can rewrite the left side of the equation:
2.25a + 2.25(1.3) = 20.7
From here, we can isolate a using algebraic manipulation:
↓ simplifying the multiplication ... 2.25(1.3) = 2.925
2.25a + 2.925 = 20.7
↓ subtracting 2.925 from both sides
2.25a = 20.7 - 2.925
2.25a = 17.775
↓ dividing both sides by 2.25
a = 7.9
