Algebra
How do I solve by the substitution method? 7x +6y=13
x= 35-5y. I need help figuring this out.
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Substitution is a method of solving a system of equations in which one equation is solved for one variable, and the resulting expression is substituted into the other equation. To solve for x by substitution, first solve the given equation for x. 7x + 6y = 13 7x = 13 - 6y x = (13 - 6y) / 7 Once x is solved for, substitute the expression in to the other equation. 7x + 6y = 13 7(13 - 6y) / 7 + 6y = 13 13 - 6y + 6y = 13 13 = 13 Therefore, x = (13 - 6y) / 7.
