import { types } from '@math-blocks/semantic';
import { Step } from '../types';
/**
 * Solve a linear equation for a given variable.
 *
 * @param node the equation (or system of equations) being solved
 * @param ident the variable being solved for
 */
export declare function solveLinear(node: types.NumericRelation, ident: types.Identifier): Extract<Step, {
    message: 'solve for variable';
}> | void;
export declare const isLinear: (node: types.Node) => boolean;