Solve the system of equations by substitution
y=3x-7
2x+5y=16

Substitute 3x - 7 for y in 2x + 5y = 16, then solve for x:
2x + 5(3x - 7) = 16

Distribute the 5:
2x + 15x - 35 = 16

Add like terms:
17x - 35 = 16

Add 35 on both sides:
17x = 51

Divide 17 on both sides:
x = 3

Now that we found that x = 3, we can substitute that into y = 3x - 7 to solve for y

y = 3(3) - 7
y = 9 - 7
y = 2

So y = 2, that means the solution to the system of equations is (3, 2).

Hope this helps! :)

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)