book Maths Puzzle Numerical Ability

have two problems slove for the equation by first eleminating the fraction

3m/4 + m/2= -5

Solve for the equation
0.1x+0.05(x - 300)=105

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book Other Question

The length of a rectangle is 3x+4y feet, and the width is 2x-3y feet. compute the perimeter and the area. Hello

I need assistance in solving this

Wrtie as the sum or difference of single logarithms of x, y, and z

log(lowercase)8{(3x 3sqrt y) / z^5}

Note: the 3 is inside the