Question

Solve the following equations and also check your result in each case:

0.18(5x - 4) = 0.5x + 0.8

Answer 1

0.18(5x - 4) = 0.50x + 0.8

0.90x - 0.72 = 0.50x + 0.8

On transposing 0.50x to LHS and 0.80 to RHS, we get

0.90x - 0.50x = 0.72 + 0.8

0.40x = 1.52

x = 3.8

Check:

Taking LHS

0.18(5x - 4)

On substituting x = 3.8, we get

0.18(5 x 3.8 - 4) = 2.7

Taking RHS

0.50x + 0.8

On substituting x = 3.8, we get

0.50 x 3.8 + 0.8 = 2.7

We got LHS=RHS