Question

How do you solve 0.2(2x+12)=510.5+(−2)1?

Answer 1

$0.2(2x + 12) = 510.5 + ( - 2) \times 1 \\ \\ = \geqslant 0.4x + 2.4 = 510.5 - 2 \\ \\ = \geqslant 0.4x = 508.5 - 2.4 \\ \\ = \geqslant 0.4 x = 506.1 \\ \\ = \geqslant x = \frac{5061}{4}$