Two step problems
3x+6=21
What is x
5
25x
x=5
125
10+(20z+5z)-5
5(5z+1)
x2
x=10
100
7y-9=40
What is y
7
6y
y=200
1,200
5!
120
W3
w=5
125
9z+9=90
What is z
9
7a
a=1000
7000
7!
5040
Z3
Z=10
1,000
20a+8=68
What is a
3
120z
z=5
600
13!
6,227,020,800
M2
M=100
10,000
120s+50=650
What is s
5
9v
v=2000
18,000
25!
Sorry
1.5511210043x10 to the 25 power
B2
B=1,0001,000,000