"Basic Properties of Equations" PPT Courseware 6

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"Basic Properties of Equations" PPT Courseware 6

Property 1 of the equation:

If you add (or subtract) the same number or equation to both sides of an equation, the result is still an equation.

It can be represented by letters:

If a=b then a±c=b±c

Property 2 of the equation:

If both sides of an equation are multiplied (or divided by) the same number or equation (the divisor cannot be 0), the result is still an equation.

It can be represented by letters:

If a=b then ac=bc or a/c=b/c(c≠0)

Quick answer questions

1. Based on the conditions of each of the following questions, write an equation that still holds true.

(1)a=-b, add b to both sides

(2)2a=3b, divide both sides by 6

(3)a/3=b/4-1, multiply both sides by 12

(4)a+1/x=1, multiply both sides by x.

2. It is known that x+3=1, please use the basic properties of the equation to transform it.

No matter how I change, I will

If x=2 is the solution of the equation bx+3=5, can you solve the equation 3y-1=by+9?

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Update Time: 2024-11-22

This template belongs to Mathematics courseware Hebei Education Edition Seventh Grade Mathematics Volume 1 industry PPT template

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