Need major help with Algebra

Jay Harris

New member
Find the measures of an angle such that the sum of the measures of its complement and its supplement is 174.

(90-x)=complement (180-x)=supplement

(90-x)+(180-x)=174
Combine like terms:
90+180+-x+-x=174
270+2x=174
Get the variable on one side by itself:
270-270+2x=174-270
2x=96 then divide 2x=96
2x=2x

x=48. 90-48=42 180-48=134 42+134=174

This is what I came up with. Thank you for your help ahead of time.

Subhotosh Khan

Super Moderator
Staff member
Jay Harris said:
Find the measures of an angle such that the sum of the measures of its complement and its supplement is 174.

(90-x)=complement (180-x)=supplement

(90-x)+(180-x)=174
Combine like terms:
90+180+-x+-x=174
270-2x=174 Corrected the sign mistake
Get the variable on one side by itself:
270-270-2x=174-270
-2x=-96 then divide 2x=96
2x=2x

x=48. 90-48=42 180-48=134 42+134=174

This is what I came up with. Thank you for your help ahead of time.
You are correct - except for some typos that I fixed above.

Good work about checking your work

Denis

Senior Member
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