7y solve substitution 4x 6y graph brainly step please Solve 6x=7y+7 and 7y-x=8 by substitution method.
4x 7y 6x 4y 6x+3y=6xy; 2x+4y=5xy solve them by reducing them to pair of linear 4y 6xy 6x 3y 5xy
6x+7y=4x+4y (? , -4) complete the missing value in the solution to the .
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