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GuessWhosBackBaby
High School
Solve by substitution
-4.5x - 2y = -12.5
3.25x - y= -0.74
I know the answer. Can someone just give steps?
Leave an answer
Our People Answers
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(Based on todays review)
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s1m1
In second equation add 0.74 and y to both sides: 3.25x+0.74=y;
Substitute y in the first equation: -4.5x-2(3.25x+0.74)=-12.5;
Distribute multiplication over addition:
-4.5x-6.50x -1.48=-12.5;
Combine like terms and add 1.48 to both sides:
-11x= -12.5+1.48;
-11x= 11.02 divide both sides by -11;
X= -11.02/11= -1.00(18)
Y= 3.25• -1.00(18)+.74= -2.515(90)
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