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1/7 + 5/3x

1 x 3x / 7 x 3x + 5 x7 / 3x /7

= 3x/21x + 35/21x

= 3x + 35 / 21x

Answered by Rachel C. • Maths tutor

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4x^2+5x+2=10

x=0.921 x=-2.17

Answered by Charles K. • Maths tutor

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How do you solve a set of three similatenous equations with three unknown variables?

You should manipulate the equations into a form where you can eliminate a variable, using two of the equations. From here, you should be left with two new equations and two unknown variables. Repeat the s...

Answered by Matthew G. • Maths tutor

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Find x in the following linear equation (5x-3)/4=2

x=11/5

Answered by Will P. • Maths tutor

2844 Views

2x^2-6x+5 can be written in the form a(x -b)^ 2 + c where a, b and c are positive numbers. Find a,b and c.

In order to solve this problem we must first complete the square. To complete the square we need to factorise the equation to get the coefficient of x to be 1. This gives: 2(x^2-3x)+5. We then need to com...

Answered by Chloe H. • Maths tutor

21121 Views