Combine the 3x and the 2x which equals 3x-2x= 39-18 which then equals : x=39-18. So u solve 39-18 which equals 21 so that leaves you with the answer being X=21.
Answer: 3:18
Step-by-step explanation: multiply the ratio and then 3 ft.
Another way to do it is
2x-y=17
x-y=10, x=10+y
substitute x=10+y for x in 2x-y=17 and get
2(10+y)-y=17
20+2y-y=17
20+y=17
subtract 20 from both sides
y=-3
subsitute y=-3 into equation x-y=10
x-(-3)=10
x+3=10
subtract 3 from both sides
x=7
or subsitute into 2x-y=17
2x-(-3)=17
2x+3=17
subtract 3 from both sides
2x=14
divide both sides by two
x=7
<span>If it's an identity over an infinite field, then it has an infinite number of solutions.
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3x and 2x are alike terms, as they have the same variable