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GB-07-05-001 · Form and solve an equation

A rectangle has length (12x+10)(12x+10) cm and width xx cm. Its perimeter is 410 cm. Work out the width of the rectangle.

Forming & Solving a Linear Equation Booklet p. 10
Method
1) Form perimeter equation = given total
2) Collect like terms
3) Kill, kill to solve for x
Worked Example (GB-07-05-001)
Booklet p. 10 — Form linear equation, collect like terms, and "Kill, kill" to solve for xx:
1) 2(12x+10)+2x=4102(12x+10)+2x=410
2) 26x=39026x=390
3) 15 cm
15 cm