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Maths
GCSE

Simultaneous Equation: 3x + y = -4 / 3x - 4y = 6

Route 1 (Standard): 1. 3x + y = -4 / 2. 3x - 4y = 6 / MINUS 2 FROM 1 / y - (-4y) = 5y / -4 - 6 = - 10 / 5y = - 10 / y = -2 /PUT y-VALUE BACK INTO ORIGINAL EQ  / 3x - 2 = -4 / 3x = ...

Answered by Maths tutor
3680 Views

2(x+4)=x+10

When solving equations like this, the most important thing to remember is that you must do the same thing to both sides. First multiply out the brackets, multiplying the x and the 4 by 2, giving 2x+8=x+10...

MH
Answered by Mimi H. Maths tutor
2779 Views

Solve 4(x+3)=2x+8

First explain that to 'solve' means to find the value for 'x'. Then, using the rule of BIDMAS, explain that in order to simplify the process, the first step is to open up the brackets on the left hand sid...

WZ
Answered by Wayne Z. Maths tutor
7858 Views

3/5 of a number is 162. Work out what 4/5 of the same number is.

216

Answered by Maths tutor
2985 Views

Expand the brackets? (x+4)(2x-3)

Create a smiling face with arrows between the terms and then go through and multiply the terms together.(Diagram of the smiling face)(x+4)(2x-3) = 2x2 - 12 - 3x + 8x = 2x2 + 5x - 12T...

TR
Answered by Tim R. Maths tutor
3981 Views

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