Answer:
6.7 is the value of x.
Explanation:
Given equations are
2x+2y=17 eq(1)
4x-y=25 eq(2)
from eq(2), we get
-y=25-4x
multiplying by -1 to above equation, we get
y=-25+4x
y=4x-25
subtitute above value of y in eq(1), we get
2x+2(4x-25)=17
2x+8x-50=17
add 50 on both sides of above equation, we get
2x+8x-50+50=17+50
2x+8x+0=17+50
2x+8x=17+50
add like terms
10x=67
dividing by 10 on both sides of above equation, we get
10x/10=67/10
x=67/10=6.7 which is the answer.