What is the solution of the system?
1 answer:
The Answer is b: x = 18, y = -20 Proof: Solve the following system: {4 x + 3 y = 12 | (equation 1) {7 x + 5 y = 26 | (equation 2) Swap equation 1 with equation 2: {7 x + 5 y = 26 | (equation 1) {4 x + 3 y = 12 | (equation 2) Subtract 4/7 × (equation 1) from equation 2: {7 x + 5 y = 26 | (equation 1) {0 x+y/7 = (-20)/7 | (equation 2) Multiply equation 2 by 7: {7 x + 5 y = 26 | (equation 1) {0 x+y = -20 | (equation 2) Subtract 5 × (equation 2) from equation 1: {7 x+0 y = 126 | (equation 1) {0 x+y = -20 | (equation 2) Divide equation 1 by 7: {x+0 y = 18 | (equation 1) {0 x+y = -20 | (equation 2) Collect results:Answer: {x = 18, y = -20
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Step-by-step explanation:
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