Mathematics
Algebraic methods: Substitution method and Elimination method.
Practice questions
What is the value of (x-y) from (\frac{x+2y}{3}=8) and (\frac{2x-y}{5}=3)?What is the number of solutions of (2x+3y=11) and (4x+6y=22)?Which statement is correct about (2x+3y=11) and (4x+6y=21)?What is the value of (y) from (4x+9y=71) and (5x-3y=8)?If (4a+3b=276) and (2a+5b=250), what is the value of (a)?What is the value of (x+2y) from (7x-2y=39) and (3x+2y=21)?If (x=3y-4) and (2x+5y=37), what is the value of (y)?In a class, the total number of boys and girls is (68). Twice the number of boys plus the number of girls is (112). What is the number of girls?If (3x-4y=-2) and (5x+4y=34), what is the value of (2x+y)?What is the solution of (2(x+y)=34) and (3(x-y)=15)?On solving the equations (3x+2y=16) and (5x-y=11), what are the values of (x) and (y)?If (7x-4y=2) and (3x+2y=20), find the value of (2x+y).What is the solution of the equations (2x+5y=31) and (4x-3y=5)?If (x+y=14) and (3x-2y=7), what is the value of (x-y)?In the equations (6x+7y=39) and (2x-y=1), what is the value of (y)?If (5x+3y=44) and (2x-y=3), find the value of (xy).On solving (9x-2y=23) and (4x+y=17), what will be the value of (x+2y)?If (8x+5y=13) and (3x-2y=12), what is the value of (x)?The sum of two numbers is (23) and their difference is (7). What are the numbers?In a two-digit number, the sum of digits is (11). The number formed by reversing the digits is (27) less than the original number. What is the original number?