7th Grade Equations & Expressions
1.  5b-17-13b=7
Practice combining like terms:
b=
2.  -9 = 27-11p-13p
Practice combining like terms:
p=
3.  8y-6+9=10y+3-2
Practice combining like terms:
y=
4.  2(3a+2)=-8
Practice using the distributive property:
a=
5.  -x+4(x+3)=-12
Practice using the distributive property:
x=
6. -4d-2(3+d)=-14
Practice using the distributive property:
d=
7.     4(x-3)=-5(6-2x)
Practice using the distributive property:
x=
8.   16x-15-9x=13
Mixture of multistep equations
x=
9.   -31=8-8x-7
Mixture of multistep equations
x=
10.   15-2(a-4)=13
Mixture of multistep equations
a=
1101111
Mixture of multistep equations
11.     8x-10-3x=20
x=
Mixture of multistep equations
12.      2x+10-6x=46
x=
Mixture of multistep equations
13.   2(x+3)+2x=22
x=
Mixture of multistep equations
14.   8-3(c+2)=-13
c=
Mixture of multistep equations

15.   -(5y-2)+4=26
y=
16.    A health club charges non-members $2 per day to use
 all the facilities and $5per day for aerobics classes.

 
Members pay a yearly fee of $200 plus $3 per day for
aerobic classes. 
You plan to take an aerobics class each time you go to the gym.

Write and solve an equation to find the number of days
 you must use the club to justify a yearly membership.

 Hint:  Find the number of times for which the two plans
 would cost the same.
 

Let "d" represent the days.
d=
days
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