Solving_equations_with_brackets-_multiplying_out

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Solving Equations 2- Equations with Brackets:

Solving Equations 2- Equations with Brackets If x stands for a number, can I find out what that number is? HAVE YOU NOT GOT OFF THIS SLIDE YET? COME ON! GET MOVING GUYS!

Solving Equations recap:

Solving Equations recap Solve this equations (what number is the x representing?): 5x + 2 =17 3x-4=26 10x+7=87 4x -6= 30 7x-10=11 Answers x=3 x=10 x=8 x=9 x=3

Brackets:

Brackets 3(x+4) To solve an equation with brackets, first we have to remove the brackets, by MULTIPLYING OUT the brackets

Multiplying out Brackets:

Multiplying out Brackets 3(x+4)=18 Multiply the number outside the brackets by both bits on the inside 3x +12 Now solve this to get x=2 =18

Multiplying out Brackets:

Multiplying out Brackets 6 (x+2)=36 Multiply the number outside the brackets by both bits on the inside 6 x +12 Now solve this to get x=4 =36

Multiplying out Brackets:

Multiplying out Brackets 3(2x+5)=33 Multiply the number outside the brackets by both bits on the inside 6x +15 Now solve this to get x=3 =33

Multiplying out Brackets:

Multiplying out Brackets 3(7x-1)=18 Multiply the number outside the brackets by both bits on the inside 21x -3 Now solve this to get x=1 =18

PowerPoint Presentation:

Solve these equations 2(x +5)=16 6(2x +3)=42 8(4x -2)=80 5(3x -9)=15 2(4x -2)=36 8(3x – 4)=88 4(3x + 3)=48 5(2x +9)=85 6(4x -7)=78 2(3x -5)=14 Answers x=3 x=2 x=3 x=4 x=5 x=5 x=3 x=4 x=5 x=4

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