Question

Solve for a
0.25a + 0.5 = 4.5

Answer 1

0.25a=4.5-0.5

0.25a, =4

a=4/0.25=16.

Answer 2

$\boxed{a\:=16}$

$\bold{0.25a+0.5 = 4.5}$

$\bold{0.25a= 4.5 - 0.5}$

$\bold{0.25a= 4.0}$

$\bold{a= 4 \div 0.25}$

$\bold{a=16}$

$\underline{Therefore\:value\:of\:a=16}$

$\bold{Verification=}$

$\bold{0.25a+0.5 = 4.5}$

$\bold{[Substitute\:16\:in\:place\:of\:a]}$

$\bold{0.25(16)+0.5 = 4.5}$

$\bold{4+0.5 = 4.5}$

$\bold{4.5= 4.5}$

$\bold{LHS=RHS}$

$\bold{a=16}$