Homework: 5.1 Systems of Linear Equations core: 0 of 1 pt
1 of 9 (5 complete)
5.1.19
Solve by the elimination
method.
7x - y = 51
x + 3y = 23
The solution set is
(Simplify your answer. Type an ordered

Step-by-step explanation:

Given the system of linear equations

solving by the elimination method

so

now solving for y

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation: