Respuesta :
Math problems→x
Science problems→y
x+y=42
x=10+y
10+y+y=42⇒2y=32⇒y=32/2⇒y=16
x=10+y
y=16
x=10+16⇒x=26
I have 26 math problems and 16 science problems.
Science problems→y
x+y=42
x=10+y
10+y+y=42⇒2y=32⇒y=32/2⇒y=16
x=10+y
y=16
x=10+16⇒x=26
I have 26 math problems and 16 science problems.
X= math problems
y= science problems
x +y =42
x= y+10
Substitute: (y+10) + y =42
Combine y: 2y +10=42
Solve for y: y= 16
There are 16 science questions and 26 math questions