Help pls dont answer if you don’t know also I’ll give brainliest

4x+7z

Step-by-step explanation:

4x + 2z + z +4z is the expression

The simplified expression is just the terms combined

so,

4x + 2z+1z+4z

4x+3z+4z

4x+7z

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

55/i dont know i do it for the points

step-by-step explanation: