book Maths Puzzle Numerical Ability

can I get some help with this problem please:

-7.5xs-0.9=-5.7x + 4.5

Read Solution (Total 0)

book Other Question

Solve the following problem and include your steps you use to solve this problem.
A roof truss is in the shape of a triangle with a height of x feet and a base of 2x + 1 feet. Wri If $10,000 and $4000 are invested such that $1250 is earned in one year, and if the rate of interest on the larger investment is 2% more than that of the smaller investment, find the rates of interest.