Question

Eight less than a number is the same as four the number increased by seven

Answer 1

◆ let the number be x

according to question :

=) x-8= 4(x+7)

=) x- 8 = 4x + 28

=) 3x = -36

=) x = -12

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Answer 2

Let's write that as an equation.

x-8=4x+7

So, you must solve for x by putting all of x on one side then solving for the value of one x.

x-8=4x+7
-8=3x+7
-15=3x
-5=x

Check your work.

(-5)-8=4(-5)+7
-13=-13