A-b=21
5a-2b=18
We can use substitution here. Take the first equation and solve for A. (Picking this one because it's easy)
a = 21+b
Plugin to the second equation:5(21+b)-2b=18
Simplify: 105 + 5b - 2b = 18
Simplify: 105 + 3b = 18
Subtract both sides: 3b = 18-105
Simplify: 3b = -87
Divide: b = -29
Plug back into the first: a=21+b
a = 21 - 29
a = -8
Option D
Answer:
x=26/3 um this is right but its not on your screen .......I HOPE THIS HELPED
Step-by-step explanation:
The number under 56 would be 3, the number under that would be 59, the number above 7 would be 42, the number to the right of 42 would be 98, the number under 10 would be 108. I think that's all of them, let me know if you have any questions :)
D. 640
5x^3y^2
5(2)^3(4)^2
5(8) • 16
40 • 16
640
