Question

Please help me to solve by substitution method.

7x+8y =44

x=41-5y

Answer 1

7 x 41-5y+8y=44
287+3y=44
3y=-287+44
3y=-243
y=-243 divided by 3
y=81

Answer 2

Patty should have used brackets

in 7x + 8y = 44
7(41-5y) + 8y = 44
287 - 35y + 8y = 44
-27y = -243
y = 9

then in x= 41-5y
x = 41-45
x = -4

so x=-4 and y = 9