Question

What value of a makes the equation true? 1.7a+0.3a=4/5 btw 4/5 is a fraction

Answer 1

1.7a + 0.3a = 0.8;
(1.7 + 0.3)a = 0.8;
2 x a = 0.8;
a = 0.8 ÷2;
a = 0.4;